Sponsored Links: You just have to follow the instructions from the help page of the app. You do everything on your phone. Read the help page and note all the picture sizes you need for the theme items. Having note them and prepared them in a folder for easy access when you start to make theme with the app. Then you go to the folder to select them for: background image, application, ptt, message, contacts, Choose the color you like for background etc. It is very easy to follow. So enjoy.