Hi! I saw your piece in my art feed, and I figured that I'd write you a critique, if that's okay! First off, I love the colors. Everything is so light and pastel. I have to say, it's the colors and style is very appealing. I wish I could color like this.... Maybe you could do a tutorial for it? I'd really appreciate it.
The only issue I have with this piece is with your anatomy, the arm that is behind her looks unnatural and extremely painful. What I do when I'm drawing is put myself in the position of the character. If the position hurts, or I can't hold it, I won't use it.
Also, there's no shame in using references when drawing, and it can help. (as long as you don't trace it)