I actually did this craft last year for Mother's Day with the daycare kids but a friend reminded me that it would be a great Valentine's Day craft also. So I figured that I would share. Aren't I nice. (Don't answer that)
So start with a beautiful subject (that's Princess) and have them hold the fake flower you're giving. Take a pic of the child holding the flower.
Then I printed the pic as a 8x10 on reg paper (I'm cheap thats why...LOL) I think glued the picture onto a piece of construction paper (to make it stiff for the flower). I sliced a tiny hole above and below her hand holding the flower. Finally you insert the flower and there you go.