Arrows

Lines are a bit wobbly. Remember that confidence is always more important than accuracy in those exercises, don't hesitate to sacrifice accuracy to get the lines as confident as you can. Don't forget to ghost as well every mark, as it looks like you might be rushing some of those. Hatching is a bit rushed so again, take your time.

They flow pretty nicely through space, but you can improve them by exaggerating more how they get bigger as they get closer to the viewers.

Organic forms

Sausage forms are mostly good, a few ones going away a little from the shape we are aiming for, (2 identical balls connected by a tube of consistent width), but mostly correct. Ellipses are pretty confident too, the main issue I can see is the allignment of the ellipses to the minor axis. Remember that the minor axis should cut the ellipses in 2 identical halves, so try to pay more attention to it.

Textures

Mostly pretty good, though I think you might have been scribbling at a few parts. Remember that in this exercise you should look at the reference before making any tiny little mark. You seem to be focusing a bit on contours, so try to be more careful with that as well, you should only be drawing cast shadows.

Form intersections

Some lines are a bit wobbly here so try to be careful with that, though mostly confident. Remember that always confidence is more important than accuracy in this exercises, just like with the arrows.

Another thing is the main objective of the exercise, which is to keep forms in the same space consistently, making them resemble sharing the same scene. To do this, you need to make the forms you draw to have consistent foreshortening, and a easier way to do this is to draw forms with shallow foreshortening, so be sure you focus on that on the next attempts at this exercise you do.

Another thing I can see is that you are repeating some lines, don't forget not to repeat any of them, no matter how wrong they were.

Organic intersections

Feels pretty solid in general, great job! Only issue is that you aren't drawing through your forms, draw through them even if you can't see them.