Theres a few polys flying aboout that cud be cleaned up. If ur going to put the long hair on like in the reference then u can get away with making the ear 'hole' into tidy geometry too. Look for making the lines flow with muscle movement. it'll make it easy to move, low poly or not. The shape and proportions look excellent, which, so i'm told over and over again, is the key to modelling.
good stuff, keep us posted