It depends on what you are using really, you need something that edits photo like Photoshop or GIMP. If I had paint on my comp I would tell you how to do it one that if it is possible but I have a mac.
1. It means they want to edit a picture to make it look sharper (Derp). 2. *What *Does *Mean. 3, This question is over two years old. Replying won't do any good.