I wonder how long she'll put up with this. Probably depends on who's with her, I suppose. I have this sneaking suspicion that Dash actually kinda likes to look pretty sometimes, but is just embarrassed to do so in any situation where it might make her seem less cool.
So hm, how do you decide which color to use for her eyebrows? Not as simple as the other ponies, where an easy single mane color to use. I think you've usually used the red for Dash before, but yellow works too. Maybe you should try out one picture of her with fully rainbow-colored eyebrows some time. That'd be amusing.
By the way, I think your face style might be starting to get into my head. I had a pony dream the other day, and it reminded me a lot of your somewhat-more-realistic-but-not-fully-horse faces quite a bit, rather than looking exactly like the characters do in the show.