I really like how you drew the girl, but the hammer just seems to be tacked on. Holding a hammer sideways in that position is unnatural, especially as hammers are heavily weighted to their heads.
The color count is 422. Seems like a setting issue with the tool you are using when you are saving your art. Please fix before we can admit this piece into your gallery.
I didn't even notice until ParkerBabyDiaperCompany mentioned it. I don't think it's necessarily the angle of the hammer, but I think it could be the grip of her left hand. The hammer could maybe be lowered a pixel or so and then the hand could be reassessed, but overall it looks amazing.
I love this style! Great work!