Hi Sillysnek (love the name)! I'm not a TA, but I'm going to try my best to give some feedback.

I'll start with your organic arrows - really well done! Your lines are confident, and I can see you applying the principles of overlap and perspective well. There are 2 arrows where you haven't overlapped the lines (top 3rd and bottom 1st) and I would recommend experimenting with those to see how you can make those seem 3D. All in all, great job.

Moving on to the leaves exercise - great job getting the leaves to flow nicely. Again your lines are confident and your construction work is largely well done. One area I would recommend working on is zigzagging the edge (https://drawabox.com/lesson/3/2/zigzag) - in some of your leaves, you've applied waves as single strokes. It doesn't help the illusion of 3D though, and our goal is to be intentional with each mark we put down. I would say to practice making those waves with individual strokes, making sure to lift your pen with each. Very good work though.

Branches - great job setting down smooth, confident spines for your branches. You've drawn through your ellipses and extended the bridging lines atleast halfway past the next ellipse. You're moving in the right direction, keep it up!

Next, plant drawings - largely well done! Most of your leaves and branches construction are solid and you've also done a good job breaking down complex shapes into simpler ones and building on top of them - for ex. 5c and 6a. 6c also I really like a lot, I can see the weight of the object reflected in the drawing. Something I notice though is that some of the work is incomplete - like with 1a, 3b, 4a and aloe vera, you put down contour lines and edges but only for some leaves in the drawing. You should follow through with those for the whole drawing, because otherwise a part of your plant looks 2D and another looks 3D.

Overall, you're going in the right direction with your work, great job and keep it up! Please let me know if you have any questions about the above, and I hope I was helpful.