Hello I'm going to be criticing your homework

Your lines are quite clean which is good and your leaves exercises flow through space and are constructed without cutting into the original form which is correct.

I would suggest for your flower drawings the ellipses degrees should be much more diverse then how you drew them. Your rose for example the ellipses near the top should be wider then in the center since you're looking up at them.

You should also draw through your forms for example your catus the different (heads I'm not sure what there called) just cut off instead you should think about how they would intersect each other. Because cutting them off makes the drawing feel flatter and drawing through your form forces your mind to think about the object as a 3D volume since you need to think where these forms will interact with each other in space.

As for your mushrooms the textures on them flatten them out a bit I would suggest wrapping the textures around the edges for example if the textures on the surface were circular near the edges they would be much more dense and shaped more like ellipses.

Overall I would suggest you go back and practice the form intersections exercise from lesson 2 it can be a real pain but I helps your brain think about how these objects you draw are 3d forms I recommend getting a ball box and cylinder shaped object and anytime you get stumped on how your forms warp around each other study and feel around your real life form.

I hope this helps you in your drawabox journey keep up the good work