The Process

Here, what I've done so far is trace the outline of my prosthetics onto the places on my face I wanted, and began laying down my foundation around it.

Almost there...

At this point I've done as much of my base as I'm comfortable putting on before setting my beard and nebula. I began to comet up my eyebrows and add some stars. I also put the light blue outline around my nose. (For the record, I did this to make the human features of this being more prominent against the deep dark background.

Adding more stars, and putting on the galaxies. Also at this point I've put on spirit gum on both my face and the appliances.

Here my appliances are on, and I've added Diamond studs to add more depth to the face.

Voila