When creating a collage for my clients, I begin by having the client first select their favorite images. From there, I mock up a couple of different collages to show what we can do with the images. The background, text, font style, as well as the placement of the images can all be changed to your liking. Some clients prefer the clean, modern look while others levitate towards the shabby, grungy look.
Here are two examples... which one do YOU like better?