From: Daniel Piechnick
Hi Egg :) I've changed the text of the web button tutorial to explain this better. It sems you're using a non-white background here. If you're using a white background, the clouds will disappear when you turn them into an overlay layer, as they should. If you're using a non-white background, then you'll need to Ctrl+click on your "web button layer" to select it, before adding clouds. This will keep the clouds confined to that selection.