If you attend the course, you paint a demonette of Slaanesh. No ifs, no buts. However it's up to you where you take the figure, and I took mine on a rampage through a military facility. It's a limited palette with, for me, really high contrast and a sneaky dimmed light source giving a little yellow glow back onto the top.
I could wax lyrical about this course, and the people on the course with me, for hours. It may be the best painting experience I've had, and my soul feels all the better for it.