You mean something like this?
Lol, easiest trick in the book.
No, im kidding. Im very bad at lighting.
Anyways, make a new layer, choose a 200/300 px brush, and brush near your focal point. Change the blending mode to soft light *This is optional, it sometims doesn't looks to good* and there, you have it.
As for the sig...
ROFL at the dots and blurred bg!
*Hi-fives Shana*
If you want to learn about the blurring and stuff I regularly do, i'll PM the deitails if you want.
Anyways, The blur is too much. Make sure you don't overdo the bluring.