Oh, that Carbon! Hehe..
A little goes a long way, it also really makes a difference what brush you're using.. what I do is I start REALLY light, then build it up slowly until I've got the intensity I'm looking for. When blending it into another color, I just gently sweep it (in one direction) with a fluffy brush. I've learned the hard way you can't really rush with e/s like Carbon! Hehe
Lovely EOTD!!