A couple of years ago, my sister bought an Isabet Reau figure off of ebay. The figure came without the helmet or any other accessories. I finally got around to making her a custom helmet. I started with a helmet from Young Boba Fett (Kamino Escape). The helmet was too small for Reau's head, so I cut the back apart and added some green stuff to make it the right size. I then primed it with grey spray paint, and painted the details with acrylic enamel.
I'm not quite done with it yet; I hope to add another coat of the yellow and possibly clear coat it, but I like how it looks right now.