I'd reccomend using a cheapie brown eyebrow pencil from the Wet & Wild range. I've used that type for many of my other makeup jobs and it does work well.
Guyliner is my weakness...
Completed cosplays (from last fall to now)-
Rumpelstiltskin-Red/Black outfit...always in progress (Once Upon A Time)
Rumpelstiltskin-Alchemist outfit (Once Upon A Time)
Vampire Girl (Original)
Too much, but I've had to put it on hold due to reasons beyond my control.
However, I'm attempting to recreate Leezar's wardrobe from "Your Highness"...one down, four to go.