A Family Portrait of The Cakes Family and Pinkie Pie
The Background in the Frame Belongs to . I was about to make my own background so I google a sugarcube Corner and I got this It was a great Background and I don't like making Backgrounds, So I ask BobtheLurker if I can borrow it and he say yes [link]
Looks pretty good. I wish you had differentiated it up a bit from just their Pony-For-A-Day pictures on a background--even adding small differences like Pinkie's hooves gripping the frame would have been enough--but still, the compilation picture is nice.