Ok i am far from being able to draw whatsoever. (I linked a few of the drawings i did awhile ago but they suck)
and by the time i finish this stupid post we will be on another topic and i will look like an idiot.Do not treat this as very reliable
I did read a whole lot of stuff about drawing though. It looks like your making really short straight lines when your drawing. You should try to make longer curved lines while drawing instead of those short lines unless you plan on tracing over them or something later. It makes the picture look sorta messy. You should be using basic shapes and stuff to gauge the size of the different parts of the body like circles for body and head size. I saw a guide that said the body is about 2/3 of the size of the head in circle size while the legs equal one head. I read a bunch of stuff from
MLP drawing school which helped a bit.
Your drawing looks pretty good though. I think the reason it might look off is the head is disproportionate to her body and her eyes are slightly too small and pushed forward. Their eyes are really big and usually centered more on the head but you might not have known that if you weren't using a reference so that's okay.
References are a great way to practice drawing even if you are just coppying the pose and picture in general. It helps you get more of a feel for drawing that way.