Looks simple enough not to bad, but there is no zaz or pop to it, it looks like you took my render slapped it on a back ground and called it good. there is not much blending, for the head area.
It looks good as a beginner graphic but it need more detail to it, keep up the work you will get it if you need help with anything photoshop hit me up on skype at garrett.sicafoose ill get ya going.