Vision: I can see the flank pretty good, there's nothing obstructing it, oh, and Twilight can be seen just fine!

Originality: This is Rainbow Dash and she's pretty original by herself. But this idea has not been used yet so you get dibs on first again!

Technique: As usual, the lines are smooth, the colors vivid and the effects satisfying. Even the grass is greener!

Impact: It's Rainbow Dash's flank for Celestia's sake. I bet it collides with a lot of things. Does that count as impact?

Overall. this is an excellent deviation and I give it a full 5/5.