I mean no offense to the artist, in that there's nothing wrong with this picture whatsoever. It just has the strange quality of looking weirder and weirder the more you look at it.
Seriously, look at it for a minute.
Then watch these PMVs.
1.) Attack the Stable
2.) Aces High - Rainbow Dash Tribute
3.) True True Happiness
4.) The A Team
5.) Ponymon: Johto League Wonderbolts