When I did the cosplay, I used grey oil makeup I got from Party City and just put it all over my face for starters. You could also use face paint, thats an option. But each troll has their own individual look, face wise, so it just takes some color and some time to get it right! You dont even need to do that, you can just stick with the grey if youd want to. I hope this helps... 

@Oltari , Thanks! I'm a Homestuck, though I've mostly moved on to Undertale. Meaning that I am deep, deep into the fandom. My friend actually comes to me to explain both fandom stuff.

@JellyKat, Yeah I love Homestuck! Vriska is like my alter ego, even though Im nothing like her! I hope that people dont think that Im a bitch XP

@Oltari , I didn't think You were like that, I would probably be Meulin. I even have the terrible voice control at times.

@JellyKat, Yeah, if anything Im Nepeta, plus I love her, shes too gosh darn adorable!

@Oltari , I swear, I don't like to admit It, but I am a huge shipper. Ship Karkat with almost everyone and Kanaya with Rose. Roxy and Callipole, Kankri and Cronus, but yeah most of my ships belong to Undertale.

@JellyKat, Gosh man I ship too, I dont do it a whole lot but... Yeah guilty as charged

@Oltari , Well, we have all sinned in our life. Are you in the Undertale fandom? Not a lot of my friends are that into it, so I try to get others to play it, because it is a really good game 🙃