Nae mentioned you took an art class, had to check it out for myself. Sorry if that's super old news, don't get on here as much as I'd like anymore.
Some of that stuff is pretty decent, especially the figure work. Not bad for what I'm assuming is your first time doing that sort of thing.
Your still life drawings would probably be nice if I could see them :P What do you have against contrast? Use those darks! Break out the 6b pencil for your shadows to pull out the rest of the image. I used to have the same problem, and every time I drew a still life it was always too light. Make yourself push your darks to bump up the contrast.
Photos are pretty cool looking, never really done anything with that myself so I don't fully understand the process, but looks pretty sweet. Could be fun to experiment more and integrate into some of your more simple cartoon type stuff.
Looks like you got a lot out of your art class, maybe a few more in your future?