Here's another tutorial(I love to make tuts =)):
From this:
To this:
First,crop your image.I got this:
The sharpen the new base,add this:
and set it to 'Screen':
Then add this:
and set it to 'Lighten'.
Then add this:
and set it to 'Color Burn',%100(I really use this very much =))
Then add this:
and set it to 'Color Burn',%40.
TA DA!YOU'RE DONE!
Hope you like this tut!