I have found over the last eight or so years that my best designs actually result from mistakes or accidents when working in Photoshop.
Give me a few minutes in PhotoShop and I can whip up a good design or grpahic.
Give me a few hours and I am willing to bet I will choose the wrong filter, accidentally change the opacity of something and bingo…there is the finishing touch to the design/graphic I needed.
This is much of the case with the new design I am working on. So when in doubt, open Photoshop and start playing around.