I'm hoping to make a "scrapbook" when I visit Vietnam, possibly using the same method used in the photograph above. I asked the superb, Seoul-based photographer, Billy Gomez, what tools he used to create the effects in the photo. He told me he used an iPhone and the following apps:
No idea what I'll do with the scrapbook, but I'll worry about that if and when I manage to get any snaps halfway-approaching what Billy has managed to do. Take a peek, they're superb.