Also, you do realize this is anime and not real life.. right? Even flat chested anime girls have something like a B cup and average is probably something like a D.
B ain't flat. Usually, the best sizes in jap fiction, IMO, are the girls in non-ecchi (not all, though) and the supporting characters. They are usually drawn without weird proportions.
Just being sincere on how I perceive it...
I think that character's waist to hip is too thin :S. Is that 0.5 ratio? Try 0.7

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Nails with that color... Looks weird and out of place.
Fingers seem too long compared to the hand... Try removing around 5 to 10%.
Human's eye lashes aren't that thick. If you are after eye lashes, use less. If you are after just a line (typical anime) just use a single black line around the eyes.
For all the rest, looks nice! Keep on improving ^^.
Which part of the uncanny valley are you aiming at?
On another note: Weren't we going to do a slice of life? I still don't know well what kind of characters are we after...