Every now and then you have an image thats soft focused. Meaning, its not as sharp or crisp looking as you would like it to be. Fortunately, theres a trick for that! Its not a cure all, but it can make the difference between an ok image and a great image.
First, right click on your background layer, and duplicate it.
Simply click ok, and it will make a duplicate layer on top of your background layer.
Now select filter/other/highpass on the menu at the top of your screen.
Adjust the slider until you can just see the details. The higher the radius the more contrast it will add. So doing too much will just leave you with a soft focused contrasty image.
Then change the top layer (duplicated background) from normal, to overlay.
If you zoom in, you can see how much difference this will make!
Now if you want more sharpness, then simply right click on your duplicate background layer, and click duplicate layer. The more of these layers you have, the sharper your image will become. Note, if you do it too much, it will start to loose image quality and not look right. Happy Photoshopping!