I have horrendously small hands, terrible as i am a musician. They are my best asset but i really wish they were bigger D:
The biggest difference i seem to notice personally, is guys tend to have more veiny hands i.e. they poke out more than women's do, plus rougher and thicker/ more muscle, not necessarily longer. And tend to be clammy!
On a side note, i wear a ring on each finger, started as one then... i just got more... They're all pretty hench imo, kind of metaller or what have you, nothing dainty. I mean i generally look like that - wrist bands and stuff, but since coming out as FTM some people have said they think i should take them off because it's 'not manly' or something. I;m never going to take them off, because its like part of me (plus they are useful for many things other than wearing, i know that sounds odd and i don't mean it in a kinky way rofl), but what do yall think? personally i have never see women wear many rings and usually more dainty (mine are all more than 1cm thick and silver), and more often see blokes wear tonnes of kickass blingage.