Hi, I'm gonna try to be concize and to give you good feedbacks. Here we go :

Arrows

It's very good, I can see you were having fun. 2 pages were enough, no need to over do it.

Organic form with contour lines

The basic forms are okay, the ellipses and curves could you use more variation in the degree, a bit mis-aligned some time as well. Be sure to work on this exercise as a warm-up in order to get those ellipses right.

Texture Analysis

You did what was asked. Just keep on going at it from time to time to work towards that 25 texture challenge and as long as you do that and keep reading the articles / watching the videos on texture from time to time as refresehr you should get better, also I believe you can share those in the discord as you work your way forward.

Dissections

These are pretty good, I can see you took your time to get those textures to wrap around the form and to get that silhouette like asked. Very solid work.

Geometric intersections

Again, pretty solid work, don't be shy to really jam those forms inside each other, not just the corners.

Organic intersections

Some of those forms are very complexe elongated/deflated, be sure to keep them simple, it will be easier to draw, and to read.

-I'd say pretty solid work overall, I'll just ask for you to rework those Organic intersections and once that's done you can send me a DM on discord #Sansh9385 if you want a fast review. And after that you'll be free to go play with mushrooms and leaves.