Native American Indians

I wanted to get an idea of how the characters would look so I browsed hairstyles of the native Americans to get an idea of their identity.
link-https://www.google.co.uk/search?q=native+american+hairstyles&rlz=1C1NIKB_enGB507GB507&espv=210&es_sm=93&tbm=isch&tbo=u&source=univ&sa=X&ei=-uBfUprFBeqw7Abhy4GoBg&ved=0CDAQsAQ&biw=1366&bih=705&dpr=1

but these are some of the images i picked out

so I tried to recreate them in my own artwork

Even though I didn't finish all the heads i liked experimenting with hairstyles to add personality to the character straight away.