Congrats to have complete lesson 2 !

Arrows : First your lines are confidently executed which is great however your lineweight are pretty messy, here is somepoints on them :

-When adding lineweight to the arrows, they should only be done with 1 line, no more so the lineweight is not overdone.

-Lineweight needs to be done with a confident, ghosted line. Tracing over the previous line slowly is a mistake.

-Lineweight should only be added to the part that overlaps as well, it is not needed to add lineweight to the full line.

Next, you should accentuate the compressing of your arrows, the arrows need to get bigger and bigger as they go towards the viewer. Both in size, and the spacing between each fold.

https://d15v304a6xpq4b.cloudfront.net/lesson_images/011d064f.jpg

https://d15v304a6xpq4b.cloudfront.net/lesson_images/0f7c806c.jpg

Organic forms : Your saussages are pretty, however often the angle of your ellipses are messy, here something that may help you : https://imgur.com/rXLBxSg

Textures : Great but you should accentuate the gradient .

Dissections : Good work !

Form Intersections : It would appear that you understand the exerice however try to not add too much solid, something like 12 is fine.

Organic intersection : Pretty ok but sometimes your shadows are a little bit off : https://d15v304a6xpq4b.cloudfront.net/lesson_images/516f8d4f.jpg

https://www.youtube.com/watch?v=QgcmB26CHLY&feature=youtu.be