Thomas. These folks may be of some help. They are serious model makers.
I found something else. S Holmes is sculpting his own. You might see if you can contact him. He provided pics of his Falcon crest.
One last idea:
Step 1 Ruthlessly cut plastic horse in half.
Step 2 Cut and carve out a strip of rubber for the wings.
Step 3 Cut a hole in the rubber wings so the plastic horse can fit inside.
Step 4 Glue to helmet, and fill in seams with silicone glue.
THAT SHOULD actually work.
Good hunting! :o)
Thanks for all the Help!!!!