One you have applied your photos you can go back and start your embellishing.
This is the part I like the most. You may want to only use a certain color or theme, or you can just use this and that, which is what i usually choose to do,
I personally make altered book journal not photo journals but the embellishing is the same process. Go back page by page and just fill in the blank areas with buttons, ribbon, and ephemera. I like to leave piece of ribbon and lace hanging out of the pages and stuff them full of surprises.