all is great, but having an option to change the background to your liking would make this even better.

to add a different background to the existing photo, for example if you have taken the photo in a pub, change the background (pub) to a sea side background. This could mean a person, animal or object..

Also, withing this option to give the editor the choice of uploading his own background, so there will be no limited choice of backgrounds and people can add what they want.