Diablos Conjuelos

I don't know whether or not I should use super scupley or milliput, I need to buy some nails for the project and pick a main color for it. I really don't want to bake it.
here's my idea:






This is for my Munny, but now I want to do the zombie idea that I got a couple of days ago. I think I should do the zombie one now since this is a 4 inch munny and once I get the 8 inch I should do the diablos conjuelos. Bigger Munny = being able to do better detailing.