You actually did pretty good, you just didn't shade it.

Great artist to follow for this exercise, his line work is awesome! For advice regarding the drawing itself, I think you should have maybe a bit of a darker range, for example near the upper neck, that helps make the face pop out a bit more in the original, which might be a bit lacking in your piece. Still a great looking piece, hope you had fun! As for taking pictures, I think you should try to find an angle that gives the biggest amount of even light. Maybe, having a lamp and pointing it upwards to not create too many cast shadows. Then, when you have the photo on the PC, you should give it a pass in an image editing software, and calibrate the curves to increase the contrast to where you feel it should be. You can see Stan actually doing it several times for some of the photos he grabs from here! You don't need Photoshop for this, there are a lot of free options to do this (Krita is a full blown drawing software, but you can also do a great deal of image adjustments there, for example). Keep it up!

It's still possible to study aspects of it with a different tool. You just have to be mindful of the differences. Check out the next demo in the playlist. I use a regular pencil to do a study of an ink drawing :)

Wonderful pick for this exercise! Good observation on line weight, it's definitely key to giving the object dimensionality and volume. Something else about Kley that I think adds a lot of the personality and style to his sketches are his searching lines, like you can see around the elephant's right shoulder or its feet. It gives the impression that he is gliding his pen across the page in exploration before tightening the final drawing, which provides great insight into his process. Practicing this can be beneficial in improving flow, line confidence, and imaginative drawing. I would also highly recommend Marshall Vandruff's series exploring Kley if his art is of interest to you: https://youtu.be/NJYnHNCmHFY

Congrats, nice study! Keep up the good work!

Could you show us the original for reference (as well as credit to the original artist), or is this an original piece?

It definitely feels like a Watts sketch, you captured the line quality-

Hey Tiago, Your drawing is pretty good, the proportions are close and the gesture is nice. As far as the rendering, you were focused on the surface details, but missed out on how Jeff rendered the bigger forms before rendering the smaller forms. I did a quick sketch to show you what I mean, Hope it helps :)

Hey Sita, I notice you draw pretty well, but I think it's rendering that you need some help. What I'm seeing is that you are making everything too close in value, creating a flat look to your drawing. Some times when there is a lot of reflective light, people get confused and lighten the shadow side too much, which is what you did here. It's best to ignore it and just render the shadows. You have to think of the head as a box with a side, front and bottom/top. I did a quick paintover to show you what I mean, I hope it helps you, because your drawing is pretty good, but you need to think about shading as a way to give a 3 dimensional feel to your drawings. :)

I think you captured the proportions pretty well, good job :)

This is nice, but I can tell you were drawing with your fingers. Glen draws with his whole arm, that is why he can get those beautiful sweeping lines. Then he comes in and adds detail to the drawing with his fingers.

Hi, I just want to mention that the artist is psdelux, I couldnt find the artist at first.

This is a tough angle, I think you did pretty well :)

Incidentally, if you look closely you can see that Dürer corrected himself. Originally he made the nose just a little too long, then decided to shorten it just a bit, but a trace of the older line remains.

Hey Sarneth, This is a good exercise to do to explore the skull in different angles. Just make sure you keep the elements lined up with the lines. I did a quick sketch to show you what I mean, I hope it helps :)