Hi Wendy - I just did my first floating image card (loaded but still pending approval) and I have done regular glitter windows and the Cheaters Glitter Painting technique by JanTink (
Gallery at Splitcoaststampers ). I think between those three you can figure out a way to do your angel. I would either combine the floating image with the glitter window (cut out and stick the angel image on the sticky side first and then sprinkle the glitter around the angel on the rest of the sticky side) ) OR I would do JanTink's method which is a little more work but seals in the glitter and gives a clearer image. Hope that helps. Good luck!
Linda