Well, thanks for the long and detailed description of your service. But what does "your theme" mean? Just swapping out the Logo and Sticker or also the Layout?
Please help us, understanding your service by providing information.
By saying theme, i mean the buyer gets to choose what theme he'd like the outro to have obviosly and that i mean with for example he picks: Avengers, then maybe I will use their theme as music, the outro designed to feel like avengers etc. S