Plaster tape directly on your face?!? Not sure I'd do that or not. I've made full and partial head casts and I always use alginate first, then make a mother mold with plaster bandages on top of the alginate. Not only do you get an exact reproduction of your face, it is much safer than plaster directly on the skin.
That could work too since i have sculpty i can do really thin. What's dragon skin?
sure if its just the front of your face you can do it yourself. I have done it a few times. Put a little vasoline on the edge of your hairline and eyebrows, and some skin cream on your face or more vasoline then you can cut small stripes of plaster bandages and leave your eyes open until everything else is done. Then you can do your eyes if you need. Good medical bandages with set pretty fast and the shell will pop off.
Then grease the mold and pour in the plaster to make a cast.