Design Ink

What kind of ink/paint do you use to design clothes?
What kind do you use to make it look “real”??
most fashion designers use gouache for painting. but i also reccomend using an alcohol-based pen such as copic markers, often used by japanese comic illustrators ad fashion designers. they are transparent, but can be layered and blended at the same time. a bit pricey i think, but well worth it.
Value & Line in Two-Dimensional Design : Ink Washes & Value: Part 2