Cloth doll hands can be a real problem - often they are the one feature that will let down an otherwise fine piece, because they are clunky, or unnatural looking. It took me quite a few years of experimenting to come up with a cloth hand that I was happy with - the biggest breakthrough was using the idea of a separate thumb - I was able to locate the thumb in a much more natural relationship with the rest of the fingers, rather than having them all on the same plane. Here's how I do it:
Arms/hands sewn and turned; small hole nipped where "thumb bone" would be.
Pipe-cleaner framework made to insert into hand - stuffs and wires in one go!
Frame-work inserted - note the wire protruding from the thumb hole.
Hand and arm filled and a small piece of wadding wrapped around the base of the thumb.
Thumb covering slipped on - it will be ladder-stitched in place.