Bender Photo Collage - I used a 4' x 6' canvas with 12"x 14" blocks of 4x6"photos. Think quilt blocks. Glue pictures on with Elmers glue leaving a small border between. I nailed (every 12 inches or so)the canvas to wall behind random pictures to keep it smooth. We bought "primed" molding to frame it and nailed to wall. Paint trim to match woodwork. This has been up 18 months and still smooth.
Ask vcollection.ca for a custom canvas order to create a beautiful wall collage like this one or go strait to the source and check out clcs.ca (the vcollection makers!) for plaque-mount options as well as canvas, acrylic and much more.