Of course, but everyone has room for improvement, at any rate. Those that feel they don't usually are delusional and egonistic.

but what specifically

Whoops, gimmie a sec and I'll check it out 8D

Personally think you should work on your lineweight, shading, and lighting. Do you usually use references for drawing out your art?

it depends on what i'm drawing really. most times no though.

Reference more, it'll help a lot in the long run c: honestly, I would suggest referencing all the time for posing and bg's and stuff.

most times it's trouble actually finding the poses i need more than a specific muscle group or item to look at

You could also use 3D models and pose them 8D
http://doll-a.net/terawell/

i'll try it. thank you

Maybe more details? That's the only thing I can think of

I know you're primarily a character artist but the way you draw certain inanimate objects is sometimes a little lacking. Mostly bottles. Almost entirely bottles actually. But yeah your characters themselves are fine, it's the stuff around them that could be worked on methinks.

i actually don't know how to increase contrast without making things feel off

As some others have said, your backgrounds and items can be improved, but I personally really like your characters. Just continue to develop your style and I think you'll improve naturally. Studying anatomy will help you when you're doing unfamiliar poses, but don't let it make you feel like you need to try for a hyper realistic style. What you're doing works and usually looks great. Only thing further I would wish for is for you to have more finished pieces while still being as prolific as you usually are. Which I imagine is just a matter of practicing to improve your speed. Perhaps try more "action" poses too. People fighting or fucking or whatevering with visible motion and energy.

TLDR keep working on what you're doing and look at other art for inspiration and technical ideas

Your strongest facet is your imagination and aesthetic sense for character creation. Keep doing characters that interest you, keep fleshing out your worlds through your art and keep the creative juices flowing. Oh, and keep doing gnolls! ;)