I think your minotaur sprite is really good. There is 1 important mistake tho. His axe is made of metal, Metal is very shiny, which means your shades have to be very different, otherwise it just looks like an axe made out of rock. Apart from that I also made some slight changes to the clusters in the axe, I also replaced the colours of the stick attached to the axe, with the colours from his horns, to make it a more cohesive palette.
