Oy it turned out GREAT!
I'm not sure how to word it, but it just seems so much more... "clear" than other pieces you have done before. Like, the lineart is very well weighted and defined, The shadows in the dress have much more clear contrast.
If there was anything to nitpick about it woud probably be the folds on the upper part of the dress, while the middle and lower part has a really nice weighty feel to it, the upper part doesn't seem to have much "weight" or "form". The lips also feel a bit too perky for my personal tastes.
Overall it look REALLY good, and the BG also gives it a really nice textured feeling, espcially to the gradients.
Are you planning to do one like this for every inktober day...? (I keep forgetting what everyone's plans are, but given all the sketches you have... is that the case?)