As a person who never really got into the My Little Pony series, I have to say that I was really bloody impressed when I saw this on my feed, despite the fact I’m no fan of the show.
First of all, the warm colours are very inviting and the golden sunset adds a very strong effect to the clouds and the horizon, as if it wants to embrace the viewer. There are good uses of smudge and flares to add to the skies and the glare of the light.
Lastly, Rainbow Dash gives off a real sense of power in her take-off and flight above the clouds, where she can soak in the sunrays and be free. Even at speed she still manages to strike a pretty graceful sort of pose, showing off her best side.
I’m a sucker for sunsets, so needless to say, you’ve really done a good job mixing that with a defining trait of Rainbow Dash. All I can ask is that you keep this kind of effort up!