I had fun coloring this one, although I had to experiment around a little. The first thing one may notice is that I kept the lines black instead of colorized, it seem to make more sense with the crosshatching and conveying intensity; at the very least that was my experiment's hopeful result here. It also made more sense to shade with this piece as it better portrayed the homage idea (normally as you have seen, pony art, at least mine, are flats usually, like on the show). The tears and bloody nose are also directly from the anime clip.
(Removed the blood so the image is Gallery Safe - The unedited image is here *warning, minor blood*)
Rainbow Dash pushing herself to the very edge for speed. Inspired directly by this scene from the Redline anime. Rainbow Dash I see as a tragic character obsessed with being the best because deep down she has depression issues and fears of being seen as worthless.