I love to look through artists' sketchbooks and see their gallery spaces. Even better is to get a peak into their creative process. I'm currently reading Mason Currey's Daily Rituals in which he describes the everyday routines of various artists, writers, etc.
So in the spirit of sharing, here's a process I shared on Instagram last year. I began with a photograph of birds in a tree. I used a few apps to alter the photograph and then finally layered all three images together.
Photo was taken with the iPhone4 and the alterations/layering were done with apps. (No Photoshop)