I can't say whether you have gotten better at humans or not, haven't looked at enough of your gallery to judge that, sorry! However I can try and be helpful here!
Lets start with the face and hair. I like the little curls sticking out, and I know how hard it can me to shade hair. I'm not very good at it, but you did I fairly okay job! I would suggest trying to use brighter colors for highlights and darker ones for shading though. It's a little too light to notice any great details, the way you have it now.
It may be a regular thing in the style you are using, but I would not suggest drawing eyes over hair. It's never a good idea. If you're like me and don't give enough space to put everything on heads, try drawing a circle that feels slightly "too big." It feels weird, but works for me. That way I can fit the hair AND the eyes without too much trouble.
The face- I'm sorry to say- is shaped a little blandly. It's a very stock shape, to have a simple rounded face with a pointy chin. Sometimes watching anime, I notice that they will tend to make all the face shapes exactly alike. Not all, but some. I would suggest trying to give your faces more form. It can be tough, but with practice you'll get it!
The anatomy seems pretty okay, but I feel like something is off about the right leg there. You're trying to use perspective, and I feel it worked, but at the same time it looks a little strange, even for what you're trying to accomplish. I can't put my finger on it, I'm sorry. I can only say that lots of figure drawing might be able to help you out.
You did a pretty good job with the clothing, but the jacket could use a bit of work! Look at some pictures of jackets and hoodies, how they're done and different kinds of them. How they would fit on the body, and how folds may look depending on the characters position.
The shading looks very air-brush like. Instead, try to make the shading contrast more sharp. Use a brush that isn't smooth, for example. Then, determine where your light source is coming from, and add shadows from there.
Summary; the anatomy is good, but could use a little work. the same for your clothing and manner of drawing faces and hair. The contrast could use work, but can easily be fixed with some experimenting with different brushes.