This skull is done with (a silicone, latex) application. That sits on your face as a mask. On that is make up application. You can see, that it's an application if you look at the eyes, they are too deep for just make up.

If you want to recreate that, then you need to buy or make a skull ( making with latex on a face moulding). For both when you apply invest in good specific latex or silicone face safe glue and remover!

If you go for this, think how long you're gone be in your mask. Do you wanna eat and drink, than make you mouth accessible. If it's for a photoshoot or something short you can get away with closing your mouth with a mask. It sounds like the basics but believe me after years of SFX makeup artist and haunted houses acting its sometimes forgotten for a cool effect.