This is my attempt. With and without guide lines. I can see that my boxes are a bit wobbly and uneven. Is there anything else i should look for next time?

Wow that hand figure is a really cool reference

First congrats for starting to draw again! What i first can see is that you try to find the contours with too many lines at a time. I also still have problems with scratchy lines and have to be really patient while drawing. -try to use less lines, or practice to build up the lines on top of each other instead of next to each other - maybe warm up with some more beans before drawing figures and rewatch how proko is drawing. Hes planning every single stroke really well and sometimes you can see him ghosting the lines in the air befor he puts the pencil on the paper - you should check out his latest free videos on YT about drawing basics and line quality. I think you can benifit from it ! keep going and be patient with yourself. You will see that your lines will get better with regular practice. I swear.

Too cute how you gave the beans little arms and faces! Awesome work towards the 10,000 hours of mastery. I especially like how the new ones have a bit more space for folds and twists between the forms.

Hi @Anna Sch, nice studies! - It could help to decide where your mass conception lines up with a real hand (see first attached image👇). Just keep in mind that there is not just one way to do a mass conception. You can come up with your own, to solve specific problems. - Could you elaborate more on " i have problems to imagine geometric shapes.". Is it that you're having trouble imagining them on top of the real hand? Or do you struggle drawing the shapes by themself, from imagination? - When studying anatomy, it's a good idea to alternate between drawing from observation with drawing from imagination. Before you can trace the bones over a photo well, you need to have a good understanding of them and be able to draw them from imagination. Since you can't see the entire bone, you place it by imagining where it would be, based on your knowledge. That, combined with visible landmarks, can give an accurate placement. I hope this helps :)

Hey Anna, Drawing a hundred hands is a good exercise, I hope you make it. What I'm noticing about your drawings is the lack of structure. I can see your thinking about it, but it isn't making it into your drawings. I did a quick sketch of your drawing in the 4th image. I used my own hand, and not the one Stan is using, but its pretty much the same thing. You need to think about each form as having planes: front, side and top/ bottom. This will help with your shading and give your drawings a real 3 dimensional feeling. I hope this helps :)