selections around the hair could use some blending work. try using a layer mask when you extract things.
also, the background could use some realism. instead of a dark sky with a noise filter, perhaps use an actual picture of a night sky.
also, the mask looks flat compared to the face, like a cut out placed over a picture. using some blending techniques and perhaps something other than straight black would help.
We are all here to learn... i wish you luck!!!

Thanks this is what I was looking for Thanks Thanks

Lovely, I am the running princess
Best of luck author!