(Disclaimer: I'm not much of a drawing artist, so feel free to take anything I say here with a truckload of salt.) Now, with that out of the way...

Gorgeous, gorgeous picture. I love the dynamic use of color you've put all over, from the color of her hair to the red and yellow background. I really love her eyeliner too...

Her hands are a bit off though, like the hand that's out is a little too close to the camera, and her other hand looks a bit broken. The straps on her shit look almost glued to her shoulder, too...But those are fairly minor things, I think.

The details in the other things, along with the dynamic use of color, REALLY make it stand out though. Anyone who sees this is definitely going click it, I think. It's incredibly beautiful, and that alone will be enough for anyone to not notice the picky details. Divine work.