I think you done most of the drawing perfect but..

There's something off with the shoulder? 0-0

But you're really good at art!

^
to add onto what they said, the shoulder joint is too high, and the perspective looks flattened, and the other shoulder is sticking out a little too far, it looks great so far, so, I hope this helps!

You're both totally right, I feel silly for not noticing the shoulders before ;-; now It's annoying me xD but thanks so much for pointing it out! I'll update it soon :3

Don't feel silly. It is a problem of doing art that sometimes it is hard to see when you are in the middle of making it. You get so accustomed to looking at it that you don't see obvious things that are off.
One thing that helps with that as you go is to use the tool in Colors to flip the painting horizontally. This helps you see it from a different angle and re-engages your critical eye.

Thank you, I'll give that a try next time :3