This technique is a fairly simple one and the results are pretty cool. I will not be supplying you with a stock image, but this idea will work for any hi-res image.
 Before |
 After |
Step 1. Lock your image layer so you don't accidentally do something to it. Grab your lasso tool and set the feather to 5 and make sure Anti-aliased is checked.
Step 2. You are going to encounter a situation like this. The area where the feet meet the grass. What I did is select with the lasso tool the area just next to his feet. I did not make it too big though. Than when I had my selection I hit Ctrl+J. This automatically copyed and pasted that selected area into a new layer. Now with the new layer selected I move the piece that I just pasted on top of the area where his feet meet the ground. The edge of the piece is feathered so it blends in with the rest and look pretty much seamless.
Step 3. I continued doing the same for the rest of the body making sure I was selecting the areas just next to where I wanted to cover him and hitting Ctrl+J and then adjusting them. After awhile I was done and It looks as if no one was ever there. Its as simple as that!
More Tutorials: 
