However, this morning I got an e-mail saying this:
Jon,
I LOVE IT! You did an amazing job! Once my friends and family see this, you will have a ton more customers.
[...]
I'm so excited, my husband is going to love it. I'm glad I was your first customer and I am sure I will be back. These make great gifts! Thanks for all your help Jon!
So that was a relief.
The finished portrait can be seen below (Caution: it's a BIG file):

As sort of an interesting side note, the woman in the picture shares something in common with Stacy: I used the same person as the body reference as I did in Stacy's Heroic Portrait, model/person who's randomly famous in the UK simply because she has big boobs, Keeley Hazell.