It's a beautifully playful scene, with so much happiness to share. The funniest part is that while Fluttershy is comfortable here it's Applejack looking a bit worried as she tries to hold onto the line. They're not even that far from the tree branch, but I'm guessing they're pretty high up anyway.
A huge amount of praise for you on this one Kevinsano. I really do appreciate a good watercolor piece and you have made a watercolor masterpiece. In my opinion you should have deserved first with this as it takes a lot of skill to do something like this in watercolor.