Construct a Robo Skelly rib cage and the pelvis using the bucket method. Try to be as accurate as you can with them. Don’t just draw a generic rib cage shape in there. Look for clues from landmarks and muscle attachments that will tell you exactly where the rib cage is.

Samuel Sanjaya

1mo

re-visiting the ribcage assignment. adding a little bit of muscle study too.

Samuel Sanjaya

3mo

Here's my ribcage assignment. I think I draw some of them too big. Any feedbacks will be greatly appreciated.

Johnathan

3mo

The pelvis area is so challenging. Happy to take critiques - Thanks

Karas Rijji

3mo

here my assignments

Karas Rijji

3mo

I realized the pelvic error of #9 and #10 ,and tried that again

Eveline Rupenko

4mo

Here is my bunch of drawings for this lesson, I've used both skelly and assignment photos for this lesson. I'm using landmarks as a guidelines for anges of the torso bones, but still not always sure if I defined the position right!

Steve Lenze

4mo

Hey Eveline, For the most part you did pretty well. In some of the poses I noticed that you are stiffening up the poses a bit by not pushing the ribcage enough. Also, make sure you understand that the pelvis usually points down away from the ribcage. This causes a counter balance to the body. I did some quick sketches to show you what I'm talking about, I hope it helps :)

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Briar D

5mo

Posting my assignments helps me stay accountable to myself. I know I dont understand squished cylinders in perspective yet, but I'm going to keep going. If I need to revisit things later, that's fine. I feel like I can envision the structure much better than I could before I started. But I think making these from imagination would still be difficult.

Amy Counsell

5mo

this assignment was super difficult! (c" ತ,_ತ) the drawings in black are the first couple i tried then reattempted. I struggled getting the proportion and distance between the pelvis and ribcage...as well as perspective but perspective always kills me (；´Д`A these aint perfect but i dont want to dwell too long, ill keep practicing my weaknesses while moving on with the course! (● ˃̶͈̀ロ˂̶͈́)੭ꠥ⁾⁾

John Harper

5mo

Perspective becomes easier with the robo-bean. Maybe you could make some ghost lines, creating the basic bean. Then, build up that. I think I'll try it as well. Good luck.

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Amy Counsell

5mo

i made my pelvis too straight! Σ（・□・；）oh man (◞‸◟)

Gian Amir Calibuso

5mo

Ezra

5mo

Rib cage. Really difficult! I feel like i had a lot of mistakes adding up in each one but I tried my best :) had trouble seeing where the skeleton actually was in the model, and alao with the proportions

Manuel Rioja

6mo

This was the most difficult task so far, ufff, how difficult. I did my best. I know they have mistakes, write down my observations on some drawings. Now I go to the next lesson!

Manuel Rioja

6mo

I did what I could, I think that the perspective of the pelvis is not like that, and I do the best I can with the management of the digital program but I don't like how it turns out. It is the first task, I will upload the rest all together

Steve Lenze

6mo

The one thing I noticed about your drawing is that the torso and pelvis are too straight up and down. I did a quick sketch to show you what you have to think about when showing the relationship between the ribcage and the pelvis. I hope it helps :)

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@pencilstudent

6mo

Tried to gleam a better understanding of the overall egg shape (2/3=widest). Will need to investigate the plane changes and the connection between the thoracic arch and back arch caused by the 12 rib. Will do these lessons a bit more rapidly now in order to do 1 lap of anatomy faster.

@palyo

7mo

Hi everyone! These are my assignments for this lesson . I've had some problems with drawing the bucket in some poses so i opted for the cube which was way simpler . There are some drawings that i'm not satisfied with like the sixth and the ninth . Anyway, any feedbacks are greatly appreciated .

Tasha

10mo

My drawings for this assignment. Struggled with the shape of the rib cage, gonna go ahead and draw a load using the 3d model. Any advice is appreciated!

Benjamin Green

10mo

Looks good. Draw 10 more pages of them. Keep up the good work!

@outerpaja

10mo

Hi! The feedback is always grateful.

Mathias Ragnarsson

11mo

Rib cage assignment. An egg shape? That can’t be too complicated! Or… Even though the big shape is simple, it proved to be a bit of a challenge to make it read clearly. In some angles it didn’t make for any sharp corners, especially in my second image where the top plane makes it all look flat to me. In contrast I thought my back view had a more interesting angle for drawing the rib cage. Any helpful feedback is always appreciated!

Mathias Ragnarsson

11mo

Thank you for your feedback, both of you. I see what you noticed @Brett, regarding the parallel perspective lines. It’s difficult sometimes when perhaps they should only converge in a really long distance. I had a habit before to distort bodies quite a lot as I thought everything almost had to visibly converge. It all looked like it was trough a fish eye lens! But yeah, maybe they’re too parallel here. I’ll keep it in mind! Thanks for the paint overs @Jesper Axelsson I thought of them when doing a couple more drawings, from imagination this time. I still find the front view a bit difficult to portray with distinct angles, but hopefully it’s good enough until I get to put some meat on it! (Also, drawing a sitting pose from imagination posed a new problem to solve. Does the pelvis tilt forward with good posture? And backwards (or straight up) in a slouching posture?)

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Brett

11mo

A couple of points from the standing pose from the front. The perspective lines appear parallel, they should converge- I struggle with this too. Sometimes it is good to exaggerate a bit at first. The second point, with the far side of the rib cage, I don’t think you would see the side plane as drawn. The side plane is hidden by the front plane. This distorts the sense of depth.

Jesper Axelsson

11mo

Hi @Mathias Ragnarsson, these look really nice!! Clear read. Solid form. Good proportions. Pretty accurate anatomy. Overall great job! -I did paintovers with suggestions. -Here's a link to a reply I've written before where I talk about how I think when drawing anatomy that isn't visible on the surface, such as the 1st rib of the ribcage. You might appreciate reading it. https://www.proko.com/s/r6za - I think the next challenge for you is to practice drawing the ribcage from imagination. Hope this helps :)

Peter Tinkler

11mo

For me, this was easier to construct compared to the pelvis (that pelvis is dastardly tricky), and it really helped to think of it as a box first and foremost. I think I sometimes make the ribcage too long, but as always, I'm enjoying the trial and error of the process overall.

Mark Manthorpe

1yr

Drawing the ribcage. My aim was to try and draw it rotated getting more dramatic with each row down. The final row at the bottom is imo dicey and not sure it all works. Though what I took from it was the thorciac arch looks like an upside down heart to me from below.

@viny

1yr

done

Anson Man

1yr

Hello, here are my assignments for the rib cage. The hardest part of the drawing was trying to figure out the construction of the rib cage, so any critiques on this would be helpful.

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Stan Prokopenko

Founder of Proko, artist and teacher of drawing, painting, and anatomy. I try to make my lessons fun and ultra packed with information.