These are really good

Hi @ace_of_spades, great job! The animal drawings are really nice! - When starting to think about structure, it's easy to diminish gesture (this happened to me XD). The animals turned out a little stiff compared to the photo reference. Just keep that in mind. - I would practice boxes and cylinders some more. In many of you're boxes the convergence is slightly off. I wrote more in depth about it in this reply https://www.proko.com/s/3uw2 and the one below it. The ellipse crosscontours are sometimes not curving around enough. Refer back to the lesson video Structure Basics – Making Things Look 3D at 07:56. Drawing through the forms can help with getting this correct. Also, the crosscontours should get more open the more you look down on the cylinder. In the cylinder in the bottom left for example, the bottom cap should have a more open ellipse. (lesson video at 04:57) Drawing through the forms, as if they were made out of glass, can help with accuracy for both boxes and cylinders Hope this helps :)

The gestures are looking strong; the flow and rhythm of the gesture are well though out. For the messy lines, my advice is to "air" draw the line you want to plan out. Once you find your line, put it down to the paper. Check out Mike Mattesi's FORCE Improving Line Quality and Rhythm - FORCE Series Part 1 on YouTube. Otherwise keep up the good work!

Hey, that's really cool!! :D I REALLY admire how many of these you've done! I can see that in the second sheet, your lines are also firmer and more decisive, which is awesome. Firm, clear, crisp, decisive lines are what we want when drawing beans and gestures, as these lines will really enhance the piece more clarity, movement and life. I also really like how you've challenged yourself to capture lots of different angles and perspectives with varying degrees of overlap, and you're getting really good at it! If you add this sort of exercise to your warmup routines when you draw, you'll be able to easily do poses that require lots of foreshortening, and your pieces will look a lot more exciting right off the bat, since you'll be doing more challenging/interesting angles just out of habit. :) Now, as for where I can spot some opportunities for improvement in your work... hmm. I'd say that in some cases, the overlaps and twists might be a bit on the subtle side. Maybe try exaggerating some poses a bit more. What I do is: I remind myself that I'm not only trying to learn how the two masses of the torso interact; I'm also trying to learn how much the spine can bend and twist without breaking. You could try drawing some beans based on ballet poses; ballet dancers have a way of really challenging your expectations of what the spine can and cannot do!