i like the middle one best. the first doesnt have enough feeling in my opinion, and same for the last.
i would stamp out that distracting scratch mark on the middle shot. otherwise, i think its amazing, and such crisp focus too
im pretty impressed you got that type of shot with a 50mm (id expect a zoom or something)
im especially more impressed that you got such nice shots with indoor lighting. i know how much of a pain that can be...