Vision: You did exactly what should be done. Twilight Sparkle being Twilight Sparkle.
Originality: I've never seen anything like this before. Twilight in a wintry landscape, non related with winter wrap up.
Technique and Impact: With cannonlike traces, you perfectly retracted Twilight's amusement with something we can't see, and we try to guess what is. Her mane and tail sparkling, her eyes so brilliant, her amusement pose, all that light and shadow, everything pointing to a center that looks like it's out of screen, something that made me remember my old art classes about baroque. You just didn't get 5/5 in technique because we don't have the impression of seeing Twilight popping out of the screen, and you got 4.5/5 in impact because of one single deviation I saw some weeks ago that even made me cry. More impact than that, impossible.
Congratulations for you work of art!