Good to see you back, Trev! I'd really like to do a model like this as well. But I don't think that the iron-on fabrics will provide enough tension to get a scale-looking scallop effect. I've seen people used a stiffer sort of wire trailing edge for a straight edge. So on our models it might be necessary to "pre-scallop" the wire.

The other problem might be that our model ribs might not be able to take the straight of the tension needed to scallop a wire. It'll obviously take some experimentation.