Here is her completed layout:
I did something somewhat similar a couple years ago for a design team challenge. The challenge was to doodle on your photographs and in the "margins" of your grid paper. I found this great brain image on the cover of a magazine that coordinated exactly with an exhibit at the COSI Museum in Columbus, Ohio so I popped the brain up in the middle of my layout and left it "off the grid." The exhibit was crazy busy so I felt like the layout conveyed the activity and creativity of the experience.
Have you ever worked over or around the defined edges of the grid paper? Please feel to share your samples on my FB Page! Minerva Mosaics Scrapbooking with Tami Potter's Mosaic Moments