I go back and forth between my left brain and my right. Sometimes I take comfort in mathematical, repetitive designs; sometimes I just want to paint and make a mess and hopefully end up with something beautiful. My left brain wants to be neat and logical, my right brain wants to let out emotion and be a messy 7 year old.
Recently I had two ATC challenges. One was divas, and I made a pretty right brained homage to Chrissie Hynde. I used a royalty free graphic of a fairy on a butterfly, then photoshopped on Chrissie's face, some red boots and added wings from a Graphics Fairy butterfly. http://www.graphicsfairy.blogspot.com/
The other was opposites, and I felt the need to do a precise expanded square with clean lines and sharply defined blacks and whites. Both designs are very "me" but from different parts of me.