Wow!

Second attempt on pose 1 as well!

The only thing I see is the lumbar section's length (too long); remember that you can pinch the muscle between the iliac crest and the bottom of the ribs.

Hi @Ram OFT, maybe this is what you're looking for? Rib Cage Assignment Examples - Side View

Hi @Romain Decotte, these are very good! I'll try to look for things to improve on: - In some of these the sternum is a little long. - I think the top cap of the ribcage (the first rib) should be a little wider and at a less steep angle. - Maybe you forgot to think about this since the focus was on the ribcage, but the ellipse crosscontours on some of the spines seem to be at the wrong angle (marked with x's in my paintover). I struggled with drawing the spine, but it became a lot easier once I had a pelvis and ribcage to relate it too. I like to think of the thoracic portion as being tucked into the back of the ribcage; they share the same arc. It starts slightly below the 12th ribs' attachments and ends at the level of the 1st rib, with the same angle as the top cap of the ribcage. The angle of the ellipses remains perpendicular to the current direction of the spine. If I'm unsure whether I'm looking up or down at a vertebrae it helps me to imagine touching it; imagine laying my palm against it's ends. An exercise that you could try to get more comfortable with ellipse crosscontours is to start by drawing a random curve, then add ellipses to it, making sure that the ellipses are always perpendicular to the curve's current direction. Play with different sizes and degrees of openness, to show the orientation in space. Hope this helps :)

wow great work !

Hi @Bryan Del Rio, I think you've done a good job! Good structure! I'll do my best to help you further: - 2nd image, bottom right, I think the thoracic arch is a little small - 2nd image, top right, I think the perspective convergence is off. If we were looking at the ribcage from the left, the lines would converge the way they do in your drawing, but since we're looking at it nearly straight from the front they should be more parallell - I personally like to indicate the thoracic part of the spine as well, when studying the ribcage. It's a c-curve tucked into the back of the ribcage. - You seem to make the distance between the ribcage and pelvis too long. Indicating the spine can help with that. Another thing that helped me keep the distance in check was to practice the robo bean with a connection of decided length, between the two boxes, as seen in the lesson video at 04:57 https://www.proko.com/course-lesson/how-to-draw-structure-in-the-body-robo-bean/notes To get a feel for the distance you can try drawing a couple of robo beans from imagination with the connection included I hope this helps :)

Hi @Matthew Kioki, these are really good! A few notes: - I think the ribcage is a little large sometimes, or the pelvis too small - I would spend a little time looking at the 3D-model and practice drawing the ribcage from imagination. Look especially for getting the angle of the first rib right (slanted downward slightly) and the attachment of the twelth ribs (roughly halfway between the bottom of the ribgace and the bottom of the sternum.), since that will help you when drawing the obliques and lower back muslces When moving to a new section in the course I like to start with acquanting myself with 3D-model, learning how to draw it from imagination. "If I have a descent understanding of everything the second time I repeat this course I think that will help more than trying to master each part before moving onto the next one" I agree! I made the mistake of being overly thorough with the course, trying to MASTER each step (I spent 1&1/2 to 2 months on each part of the Torso course, 1h practice each day). Last year I switched to spending a week on each course part (two when it was a bones lesson) and completed the course before summer. I hope this was helpful :) Keep up the good work!

Hi @Văn Hiếu Võ, nice studies! They are well constructed! And the sacrum is looking much better now too :) -I don´t know what the reference looked like, but in many of these the ribcage as well as the distance from the 10th rib corner to the asis, seem a little long, - I believe the curve on the back should be a little more severe. The thoracic portion of the spine looks a little straight to me I hope this was helpful :)

Yeah, I agree. I´m not a pro when it comes to what website to use, but being able to rotate freely is really helpful

Maybe it is a little bit late to answer but the main issues I see are perspective problems. I think you copied the contours, especially on the pelvis. I would suggest drawing simple forms first and then try to fit them inside. (box for the ribcage, cylinder for the pelvis). But I think you made the right decision to draw skelly first. Also, I really like the sketchy feel at first I thought it was drawn on real paper. :D