Thanks for the leaf/trans jpegs. They look great. I had one small puzzle to work through. As I worked on the piece I kept seeing faint "edge ghosts" I tried everything from inside bryce. Nothing worked. Next step, I examined the mats up close. The scans have shadows, which in turn create ghosts in the trans-map. These probably won't be noticable in mid-to-distant renders. The fix for these is manually cutting them closer in an image editing program. (ok, one more small note) The center leaf is applied to a shpere, the others to a semi flat stone. Trying to flatten them with a shpere squishes the ends over. The Stone works great! Thanks Again, These are excellent samples.

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Ockham's razor- It's that simple