Woah dude. You need some reference for thoes hands. The knuckle lines dont go that far down the hand.
Here are some refs (you might notice that these are from final fantasy: The spirits within):
https://www.digitalsculptor.net/Final...nd_new_top.jpg : top
https://www.digitalsculptor.net/Final...nd_new_bot.jpg : bottom
Imagination is more important than knowledge.