Nice Practice, but you gotta get that 3D form in there. I would suggest practiceing your spheres, cylinders and cubes for a few minutes before tackling this, do some simple forms, then manipulate the forms as you wish just to gain that understanding. Then try this exercise again. The main thing is im not seeing the form wrapping in your drawings, lots of straightlines that are flattening out your heads. to slowly fix this try adding contour lines to a sphere, then add a curved plane, then try manipulating a more boxy form. Youve got this, just got to improve your 3d form understanding a little bit!











