I'm sure you didn't just post these to get compliments. (: So let the critiques begin!
First off, I know this is a cartoon, but there are things I can point out that could use a little fixing up. I'm going to point out your last one ( I think it's the last one) The soldier you posted- VERY sketchy. Though cross hatching is a technique, try to shade lightly and might I suggest never using pen? Though I hear often "I can't draw very well unless it's in pen" That's... Bullocks. Try using a pencil because we ALL make mistakes. Then you can outline. Because you're pictures again, are VERY sketchy. I can't really touch the anatomy since it IS a cartoon, but just a few little pointers on it anyways...
On some of them the arm length actually works well, on your soldier those arms are SHORT. You should actually look at your own body to draw even if it's a cartoon, just to get a feel for anatomy even if it's loose.
And the hands I get what you're going for, but in some of them you get VERY sloppy and just make a jumble. ALWAYS TAKE YOUR TIME. I know you're trying to make a shit ton of these. But if you ever feel like rushing past a point, just take a break or stop for the day till you feel like finishing it.
If you have any questions, you can always PM me. I never mind helping. I hope you don't feel like I'm tearing you apart. There is always room for improvement in EVERYONES art. And I hope you improve too!