- Begin by finding a graphic that you can use to create a "seamless tiled graphic" from (i.e. grass, pebbles, leaves, geometric shapes, etc.)
- Copy the graphic and paste it into a new Photoshop document
- Select FILTER > OTHER > OFFSET
- Enter a number of pixels to "offset" your image (you should see a distinct line appear on the image where the edges of the picture were)
- Use the Clone Stamp tool, copying/pasting, the healing brush, etc. to make the lines "disappear" as much as possible.
- Offset the picture again to see if any new lines are visible and correct (if necessary).
Here is a YouTube video demonstrating this process:
