Hi Paul
This is what I would try...

Start with a panel cove bit then 1/8" bead bit then a stanard round over bit.
1st. run the cove bit and then make the 2nd pass with the bead bit then the round over then cut the miter to fit the frame ,use some thick super glue to put them in place with acetone..
http://www.mlcswoodworking.com/shops...s/bt_bead.html http://www.mlcswoodworking.com/shops...s/raiscov.html
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