Here are more pages in my Black Journal, these combining some of my photos with other sources (the birds on a wire and the 3 vertical birds aren't my own photos).
I used 3M Spray 77 to glue the photos to the black gessoed pages. I like this glue a lot for some purposes, especially for journal pages, though I isn't as permanent as I like for stand-alone collages.
My setup for using this spray glue includes a large flat plastic bin with a lid, a magazine and the spray can. I lay my paper face down in the bin, take off my glasses and put them under something so no drop of glue touches the plastic lens (it doesn't want to come off once stuck to the glasses), and give the back of the image a quick spray. Working quickly, I lift it out of the box, close the lid, and put it in place in my journal.
Why all the care? It's a SPRAY and it likes to float around the room, landing on all surfaces and leaving a tacky mess behind. By quickly closing the lid I allow very little spray to escape the box; it harmlessly coats the inside of the bin. When the magazine page gets too sticky I turn the page and have a fresh, non-tacky surface to lay my work on.