Arrows are pretty good. Only thing I can say is that you can exaggerate them more by making them grow more exponentially. Make sure they also don't crop and fill inside the page properly as well.

Organic forms are pretty good as well. Lines are confident in general, except some contour curves, that have a little bit of wobbliness (Don't forget that you should always prioritize confidence over accuracy). And the forms themselves are almost there, some have their ends a bit pointy, so don't forget that the ends should be balls. But they're pretty close.

Textures are great overall. Only 2 issues I can see is that firstly, you have some white dots on some black shapes which can be distracting to the viewer. Try to make the shadow shapes as even as you can, a brush pen can help for this.

The other thing is the shadow shapes themselves, in which you're sometimes relying on drawing with lines instead of shapes. To make this easier, you can start by drawing the outline of the shadow shapes you want to draw, and then filling them. .

Form intersections are good too. Nice confident lines, and the forms are solid. The only thing you're missing is that the form's foreshortening isn't consistent. To make this more manageable draw them with shallow foreshortening, it'll be much easier to mantain them consistent.

And lastly, the organic intersections feel super solid. The only issue with them is that you got some forms that feel like they're going to fall. Don't forget that in this exercise the forms are supposed to be stable, so try to imagine them on their final position before drawing them.

Overall like I said, pretty good job, so I'm marking this as complete. Good luck in lesson 3 and keep up the good work!