My first thought was Pokemon or Miyazaki movie cover art. The setting is beautiful and I can feel the warmth of the sun. I only wish the surface had been done a bit differently Still, overall this is amazing!!
Simply amazing... I love the interplay between the different elements of life (the plants), light, and water. You chose an excellent picture to emulate, and you chose the best two characters to pull it off. One can image Twilight discovering how this sort of meditation allows her control over her powers, and who else would she ask to share such a wonderful thing than Spike. I love the way the light is dappled across them. It's simply amazing. Thank you so much for sharing it with us!
I've had dreams of beautiful places under ten feet of water, with clear eyes and water breathing, slowly walking through the thick transparency, light dappled and sound deadened. It's so peaceful and joyous.