I LOVE this piece- the composition is awesome, the subject matter is badass and the technique is really raw and interesting- not to mention the great use of limited palette. But PLEASE- I ask as a girl who rides a motorbike- please try not to draw girls riding motorbikes in their underwear because as someone who has in fact come off a motorbike I can safely say that putting that poor lass on two wheels without protective clothing could make her look very ugly indeed should she be naughty and run a red light! Not even going to make a comment about helmets . Still though, your work is great!
I love the white outline and I always enjoy how you let the colors define what it is we're seeing instead of relying on hard lines. Very creative and enjoyable. I especially like the girl on the right, her pose is my favorite.