This is going to be time-consuming, and probably the most challenging part of the doll. But that is ok with me. I think it's worth the effort.
I also finished up her body. It's got several layers of hard coating and gesso, and painted with acrylic paint. I also put on high gloss varnish. I like the way she's coming out so far... (sorry for the nekkid doll photos, but this is art!)
I've made a few improvements to the original (70+ years old?) doll pattern, including changes to the hands and legs, and alternative techniques. If you would like to try your hand at making a Betty Boop doll, you can grab a pattern on my Etsy shop. Have fun and Boop Boop Be-Doop!