Great idea for a natural photo booth! Vintage frames and bright blooms make for a bohemian wedding backdrop. I also just like this for the garden any day. Perhaps a frame to accentuate an area of the garden or orchids in bloom.
Lace lanterns are made by overlapping lace doilies on an inflated balloon and brushing fabric stiffener (or wallpaper glue, or even white glue) onto the doilies. Make sure to cover whole thing with the glue.