Layer Mask

I used the layer mask to perform this job. At first it was pretty hard because i had spiked hair up so it was hard to work around it so in the end i had to just get rid of it. I don't know if you can notice but i made my hair look kind of like a circle. In the end since i had the reflection of the green background i had to adjust the colors so then it would not be notice as well.

Before and After