Hair and muscle study　

I don't know what you guys think but I always think grandma's hairstyle looks sooooo ... simple, or cartoony.

So I tried to study hair drawing, I think she looks much better now :D

I also think that adding muscle to the male character makes it look good as well. It would emphasize that even though the males are skinny, they have muscles, which would contrast with the softness of the female characters.