Hi everyone, I need your help again, I'm getting a little frustated.

I am trying to extract a picture of my son from the background (which has very similar color to his hair). I have tried to google some tutorial but none have helped. He has curly hair which makes my task even more difficult. I have tried using the eraser tool and the magic extration (the one you draw a line and it picks up "magically" the subject), not much magic going on with my picture. I hope someone can help me with this. I am trying to use this picture for his b-day invitation which has its own background that matches with everything else KWIM.
TIA
Yanelis