A 9 seems resonable..
Why is because the way you shadowed the girl, makes her a little unsettled. The pinky (wow never knew that pinky isn't even a word) back on track, the way you did the pinky makes it look like a thumb sorta thick and thumb-like. lol but it's a really good picture. I seriously envy you for having such beautiful hands to create such work.
lol but seriously this is very well drawn, if its for a comic I suggest that you make it in points like old 50's comics if you know what I mean
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