John, that's looking excellent.
I am intrigued with your use of Fimo....
I have struggled with curing time of Milliput in the few portraits I have done- this makes perfect sense- I never thought to combine the two. I would worry the Fimo would shrink over the Milliput base and crack- but clearly it doesn't.
Then again I am a better carver than I am a modeller, so I always end up tweaking and scraping and sanding, and Fimo is not so good for that. But I will definitely give it a try next time.
In the olden days you had to mix original Fimo with translucent to get a better consistency, but there are several new types around now-which do you use?
cheers
Neil