That episode might be my favorite in-season episode... It felt so powerful. I didn't think about a collaboration between Luna and Rainbow Dash though... but now that I've seen For Whom The Sweetie Belle Toils, it feels almost natural for Luna to have warned Dashie about Scootaloo being in danger, explaining her appearance. I can see the experimentation but I definitely feel like this is a great artwork ^^
Alright. See scootaloo seam very destressed and fearful, (which is perfectly fine and well executed) while luna and rainbow dash look at her with comforting eyes. The idea of the picture got misplaced when the two are combined the way they are. It looks like rainbow dash and luna want scootaloo to be scared, like they are leading her to her horrors, which i guess was not the intend of this picture.
Luna, Scootaloo, and Dash are my favorite ponies so it was amazing to see the episode. I had a major freak-attack. But then I saw this. AND OHMYGOD I FREAKED OUT. HOLY SHIZNUTS THIS IS AMAZING. The detail, the expressions, the colors, and everything is so beautiful. The colors are played off of each other so well, and you can really define the emotion of the piece. It is self-explanatory- as Scootaloo deals with the nightmares in her head and Dash/Luna have to console her. <3