I don’t know enough to critique. I just want to say good job for being so dedicated to do all of those. With all that practice, you are going to make great progress. And one more comment, I especially like your squirrel. He is cute, and I like the confident quality of the lines. I think some of the longer, curved lines in the squirrel make for a pleasing visual movement in the drawing, like the swoopy back and tail.

The portion on the top of head, at hair middle parting, shapes could have simplified more I feel! :)

Wow!! Beautiful work! I loved how you did the shades!

The only problem with this great drawing is that the closest part of the object and shadow are done without simplification on planes/values (aka soft edge) :-) But maybe you did not want it.

On Day 1 after watching the tutorial.