Arrows

Pretty good in general! Only thing I noticed is that your lineweight feels a bit stiff, remember that when adding lineweight you should still do it with a drawn with the shoulder ghosted stroke too, always prioritizing confidence over accuracy.

Branches

Branches are pretty solid and confident overall, only issue I noticed is that you have some places where you got some lines that aren't connected. When starting the next stroke on each branch, a good idea is to overlap your stroke with the previous line, as if you were doing a superimposed line, like I show here.

Leaves

Pretty good overall too, there's a leaf where you might be cutting into the forms when you modify the contour, might or not be the case, but if it is, remember you need to work additively as much as possible. When working on textures too, it's try to get a reference and to work from there, instead of trying to work from imagination, just like in lesson 2.

Your plant constructions look pretty solid overall, I'll go through the issues I can find so you can keep improving:

-In your first page, you got a branch where you didn't draw the middle line, don't forget to approach them just like you did on the technical exercises, no matter how small they are. On the mushroom you did on this page as well, it's useful to draw a middle axis line to help you allign the ellipses of the mushroom to it, just like in the funnel exercises.

On the same branch where you didn't draw the middle line, remember you need to apply the method explained on the branch section for complex branches explained here.

-On your second page, you got a branch on which you didn't cap off one of its ends with an ellipse, don't forget to do it as it breaks the illusion of 3d a bit. Here as well, just as I told you on the branch exercises, it's a good idea to overlap your strokes with your previous ones too, as you don't do it much, some of your branches end up a bit stiff.

Other than that, I recommend working always as big as you can, as some of the problems you had would have been way easier to attempt if you did so, like you did on your last pages.

In general, I think that doing a drawing per page is a good idea, as it lets you attempt it with more room to think.

Overall pretty good job!