So, here I'm just messing around with sprays, covering up the drawing:
More sprays, but you can see the original face a lot more as it dries:
Then, here she is about half a million steps later:
And this is what she looks like right now, but I'm going to let her dry overnight before I play with her anymore:
The facial features themselves are super light because I just collaged her on and then painted over it. I haven't tried to define anything or shade her yet. Maybe tomorrow.