I saw a few of these on pinterest and decided to give it a try.
I cut the bottom of a sandwhich bag off and then used a chip clip to secure it. Then, you can just move the bag around however you like to get the effect you want.
My model was less than willing and the light was very bright but I just had to try it out. Georgia was very concerened about what I was doing with my camera.
Don't you worry. That is popsicle on her swimsuit.