Things You'll Need
Instructions
Position your computer cursor in the navigation bar of the program you are using, click "File" and select "Open" from the menu.
Navigate your computer cursor to the folder on your computer containing the image you want to edit. Click the icon for the file to highlight it and click "OK" in the bottom right of the window. The picture opens up in the program.
Click "Image" or "Edit" in the navigation bar of the program you are using. Sharpening appears in a number of programs, including the three mentioned in the introduction. The menu they appear in may have a different name from program to program.
Click "Sharpening" from the drop-down menu. In some programs a new window appears where you can control the amount of sharpening you are applying, and a preview window shows you how the sharpened image will look.
Click "OK" to apply the sharpening to the image. When the image has been sharpened to your satisfaction, click "File," "Save As" and save your edited image to your computer.