You guys should work on your advice giving and constructive criticism.
Instead of saying "lol anatomy" maybe you should go in depth? Like maybe next time explain how to go about improving the weak points and point out some good resources for learning? Because from experience I know that if that was the advice someone gave me I wouldn't know how the heck to tackle anatomy or how to get over the naturalness issue. No offense. D:
So CBW don't give up, and good job. I do like how you really push the darks. Contrast in art is very important and that alone can make or break a drawing, so you've got a good start in not being afraid to go really dark.
There's always room for improvement, and I don't know if you even wanted critique but... I hope I can help if you did want advice.
I tell a lot of artists this and I know it will help you too: Gesture sketch from life. It helps you loosen up and get more into the "natural" line instead of the geometric coloring book kind of drawing. Drawing from life also helps with realizing form and how to produce it on paper. [Example of some gesture sketches]
The artist is a little advanced, but the basic idea is to find shapes in forms and draw them to get the gesture of a pose.
When you gesture sketch it's good not to worry about how it will turn out; It's a quick sketch to just figure out the form and pose of an ob
ject or person. You have years and years to develop proper anatomical proportions and proper rendering. I think it's more important to get comfortable putting lines down fast, and learning from things around you. After all, a lot of artists can eyeball a photograph and copy it in rendered perfection. But how many can freehand sketch anything within sight?
Now, I'm not telling you to "draw realism". A lot of people say that to artists and well... I don't really like it. I want you to draw the way you want to as successfully as possible. With that said if that means ignoring my advice altogether, that's fine too. And my apologies for going on forever.