really great 4-sider... the only thin I'd complain about is the clouds - you should try to "imitate" the style of the bordering tile and blend it into your own style... it looks like an edge when the style change to abrupt... well, it's a 5 anyway...

It turned out well, I agree some of the clouds on the right are off a pixel or two, but otherwise great blend and nice tile.

-cx