Boring with your old psp theme ? or boring using same theme and why you not try to make something new, use your picture for your psp theme or your girl friend for your psp themes ?
Very easy ! you can make your own psp themes :
follow this step :
1. download this free software, psp theme creator
2. Select your image for wallpaper ( must be in bmp format 480 x 272 pixels ) you can edit it with photoshop or other images software.
3. Select your image for image preview ( must be in bmp format 300 x 170 pixels )
4. make icon for your themes, how to make it ? read this page
5. After all images ready, you can start click psp theme creator and then fill title, product id and version for your psp themes .
6. go to menu files and then choose export, give a name for your psp theme !
just it !
via http://heroe.web.ugm.ac.id/2008/04/29/how-to-create-psp-theme-ptf/