They're okay. You certainly have potential, that's for sure. The main thing you should work on is depth. You're drawings are all okay, but they'd be much better if they had some depth. Everything in them looks flat, and there's no shading, so it looks like you just cut them out of cardboard paper.
On the plus side, you're good at one of the things I still have problems with, which is posing [a lot of my drawings are all in the same, static pose]. My recommendation would just be going out and doing some observational drawing, that is, just drawing what you see. When you're on the bus [school bus if you're a kid, or city bus if you're older. I don't know], and just spend the whole ride drawing everything around you. Be sure to pay attention to detail, and I know this sounds weird, but don't trust your brain, trust your eyes.
People will naturally replace real objects with symbols when they think of something [a smiley face for a human face, a curved v for a bird, broccoli for a tree]. Try to resist the urge to use those symbols when you draw, and instead draw what's really in front of you. It takes much longer, but your drawings, and more importantly, your drawing skills, will be better for it. I went to an art school, and this is something they told me to do. It's harder than it sounds, but if you keep at it, you'll get it down. Good luck.
