firstly, nice eyes and ideas.
I realised you didnt put the features in the center of the head, that is a mistake if done unpropositally.
you didnt define nose and ears, the ears doesnt have form of a real ear, you only needed to make a contour of the ear separating it from head.
the nose is undefined, I put a better nose so you can see what you need to do with it.
Hair isnt right, unless you wished a mohawk there.
Also the proportions of the ears are wrong, I put the nose up a bit to make it meet the end of the ears.
you will get better if you practice until you realise what is better to do in art.