Straight from the camera. Focused on the gerbera daisy and then stuck a bunch of yellow flowers nearly against the lens face - moving it around until I could see the daisy though a small opening.
Made another at the same time - switched to different target flowers & found a different opening in the yellows. The colors on this 2nd one probably work better than the daisy + yellow - http://www.pbase.com/ed_k/image/76353932