What I do is I create a layer set for all of the text layers that I use, this ensures that I won't forget any of them down the road if I change the way the button looks and I get to see what the button looks like, then a layer set for the button because I usually have different-colored versions of the button, and then a layer set for example backgrounds, usually a black and a white layer. Anything else works around this structure, like maybe snow for holiday versions goes in a layer set on the top named 'Decals'.
How do you do your's?