If you wish to showcase pictures that are close to your heart, why not choose the shape of heart to display them. You can easily arrange your framed or unframed pictures in the shape of heart and it’s up to you if you want to fill will completely or just have an outline. Let your imagination do the playing.
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.