These trees feature a lot of smooth gradation as well as a ton of subtle color variations. I dont think this piece will make it into the gallery. The design is wonderful though, try experimenting with less colors and gradation masks. The big motto in pixel art is "less is more" after all.
13846 colors. It's a new record :D
Anyhow, we expect you to have control over all colors, all pixels you use on pixel art. You can control 16 or 32 colors, but not 13846 colors.