I like how this turned out! Very soft looking, but almost haunting at the same time.
If I may, I'd like to make a suggestion. Try drawing something that's creepy. I think your style would lend itself really well to something that slightly creepy or disturbing. Normally I don't like stuff that's creepy and I prefer a more lighthearted style. After seeing one of the girls in this image(the one in the middle that's larger than the others), she kind of has this evil undertone to her look there and it makes me think you could do creepy really well. Just a thought.
I'm a fan of traditional art so leaving it just like this is perfectly fine in my opinion Don't call it giving up, call it leaving it like this because it would look better this way than it would colored I really love this one though. They eyes are so. . . Mysterious <3 Amazing detail too Great job.