Photoshop wallpaper tutorial using your initial. Instead of duplicating the layer repeatedly, the easiest thing to do would be to use your new "logo" to create a pattern and fill a layer with it. That would take out hundreds of steps.
Photoshop help Don't get caught up in purchasing a zillion actions. It can all be done in plugins like Nik Filters and Topaz filters with much more flexibility. Actions take a while to run, the filters are faster.