Nice work and job, Amurphyr, nice work and job, on how you sketched out that hand from memory, not reference. Yet, I've got one tiny, tiny request: Why don't you look at the images from Andrew Loomis's Figure Drawing for all it's Worth, pick a hand image, look it for 30 seconds, and then you sketch it out, pretty please, please??? Why???? Because you'll get a really, very, so much more better idea at drawing your hands from memory. Then, your memory will be captured in the fewest lines as possible. Hope that helps just a teeny-tiny huge lot.
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