Not sure if .PSD's belong in here, but I didn't know where else to put them. .PSD's are in a forum tutorials right? Since you use them for learning purposes?
Anyhow here is the .PSD version of my signature "Beating Hearts Baby"
The basis of this signature was to get better at smudging, so the BG with the green, yellow, and fuchsia is smudged using the extraction itself.
The download link for the .PSD is on my Deviant Art.
The DA page to download the signature file: http://fc07.deviantart.net/fs70/f/20...61-d4qe0b9.psd