Add 3d-style save option to magazine app

I have a working app for iPhone and iPad, where the point is that the user can load/take a photo and then place a fake magazine cover on top of this. At the moment when the user hits save, the image is saved to the library, and the user is taken to a menu from where he can share the image to social medias. What I would like to include in the app, is a «3d-style» save-option, that will let the user choose between a regular rectangular shaped image OR a fancy «3d-variant», that should make the image look like an actual magazine. The user should also be able to select a color of the background, or choose wood, steel etc, to make it appear to be laying on a table or similar, prefferably with a «live preview». The most important thing is that the saved image should look like a magazine, not just rotated a few degrees, AND the quality of the image should not be compromised.I will provide the source code for the app, and will need this back with the 3d-style Save option included. Also I will need to test it through Diawi along the way.Please take a look at the follwing images, that hopefully will explain what I`m looking for.IMAGES USED IN THIS PPTX-FILE ARE JUST FOR EXPLAINING THE PROJECT, NOT AN ACTUAL PART OF THE APP.