Nice! I'm not really into the pony stuff myself (don't mind it, just don't love it), but regardless of position on the subject, one thing is for sure: they're way too cute (as in I want one as a pet cute, not "I'm a Brony" cute).
So, all in all, that picture, in the most unbiased way (hear that everyone?), I'd say this picture is an amazing representation of MLP. You got it to look pretty much how the animators do.
Also, kudos to you for displaying your masterpiece, even when there is an 80% chance of it being hated all over. You, sir, are a brave man (I think you're a man, at least; didn't bother to check your profile O.o).