I bloody hate arms, think the one at the hip's off somehow. Forearm might be too short?
I think her head's too big as well.

If there's anything else off, please tell me, I'll appreciate it!

Edit:
Took hours, but I finally finished her! I'm hoping I don't need to redo her face, I have already coloured it over 3x. Face shading is hard!

Her eyes look to close together

It looks great! Certainly better than what I've drawn, still practicing haha. The anatomy and everything is pretty accurate. The forearms are just peachy too, they don't look too long or short. Her head isn't too big, it looks proportionate compared to the rest of the body.

One thing that's bothering me was the eyes; the eyes are a biiit too close together. Possibly moving the right (first person pov) eye just a tad to the left could fix this.

I hate drawing arms too, so much. ;_;

lol same

Thanks guys for pointing that out! Now that you mentioned it, I can't unsee it!

The forearm on the upper arm looks like it tapers off too soon. The lower arm looks like it just comes down at the wrong angle--her hand would be on her butt. The length seems right though, maybe more a matter of perspective and where all the muscle bulges are? The mouth is also a bit big unless you're going for a less realistic style.

But really, I think this is really good and you're being too hard on yourself. :D