I'm having problems using the patch tool to recreate a large textured surface (snow). I was patching onto a smooth grey gradient from the left to right edge. Each patch was fairly large and had a 3px feather. After patching my result looked extremely blotchy as below: I'd appreciate any advice on why this happens and tips on how to avoid it. Also, I've noticed that I can't patch or use the healing brush close to the edge of the hill because it pulls in the black. How can I recreate texture there?