hmm, it depends
there is the sketching, pre-final drawing with pencil then inking
if I have to think of an outfit it bacomes way longer
I think 6-7 hours for the armored girl (the outfit was about to make me cry)
about 5 for the bloody empaled girl (she's not inked)
4 hours for the angel girl
and 3 hours for the one in color ( it goes fast with color and I never thought about the armor, just drew the first thing I had in mind)
I wanna put them all in cg color later...