When I have way more photos than I know I can fit in on my 12×12 page I frequently opt to print them “half-sized” on a sheet. (2 images on one 4×6 sheet.) I wind up with a bunch of photos that fit nicely on a 2×3 square Paper Tile. Printing this size of image allows me to get A LOT of photos on a page.
See the two page spread shown above. (only one of the photos was printed on a full 4×6 sheet)Page Details: 21 photos used. Created on 2 sheets of Mosaic Moments 12×12 grid paper. Multiple colors of PaperTiles used for matting images.