Source : My Little Pony Friendship Is Magic Characters : Fluttershy, Rarity and Sweetie Belle. Backdrop : The idea came from a real life pony I know, who has the tendency to show he likes someone by nibbling on heads and necks (regardless of whether it’s horse, human or dog). I know FIM ponies don’t show that much horse behavior, but I wanted to somehow use that for Fluttershy and Rarity; I think they’re the only two actually affirmed as being best friends within the show, and they’re two of my most fav ponies.
The scene is something along the lines of Fluttershy babysitting Sweetie Belle and Rarity coming by to ask whether Fluttershy would mind babysitting a little longer, since she’s not done yet with her order. Fluttershy doesn’t mind, off course.
No idea where Fluttershy got a wisteria covered garden.
(Edit : this is a friendship picture, nothing else. Double edit : I’m not opposed to the pairing even if I don’t ship it, so yes, I accept invitations of this image to shipping groups. Heck, I accept almost every invitation I get regardless of relevance. The attitude that “fluffy interaction = pairing” annoys me a bit, but not by so much that I’d reject an invite over it.)