Last time I Tried to contact you actually responded so this is something else you should add to the app. You know how you can add pictures in the background well heres an idea what if the was a nether section that when you get on it brings you to your photos. Then you pick one crop it and then you can make it a node or put it in the node editor so you can connect it to the other nodes.
finnegan99 about Stick Nodes Pro - Animator