[APH OC] Cattraine

First thing, the anatomy is really off. The arms need to be longer, even though it's chibi the anatomy still needs be right. The legs seem to be too long as well. Also, are her knees bent in some kneeling position? I was wondering since the lines on the bottom of her body make it look like she's kneeling.
The expression also throws me off. She looks uneasy or nervous. I'd think she'd be happy or giddy maybe a neutral or vague expression would work.
I adore her outfit though, but the creases on her shirt also need to be on the side. There are only creases on the front of the shirt, making it seem like its a design on the shirt. Shirts and clothing crease on the side as well since it's on the body not on top of the body.
I also wanted to know what the object her hand was, its shape make it hard to identify.
This is a really good drawing though! Keep practicing. I hope this critique helps.