Stripe Repeat Pattern
1. Use the rectangle tool to create your desired stripes (vertical).
2. Select the 'move' tool (arrow) and hold down the 'alt' button whilst clicking and dragging your stripe design across the page. This is an easier/faster way to repeat your striped pattern.
3. You can apply this 'short cut' to any amount of stripes, you do not have to fill the page.
4. Using the rectangle marquee tool, select a horizontal section of your striped pattern.
5. To 'define your pattern', go to Edit, "Define Pattern" - name it and press OK.
6. Open up a new page/blank space or area where you want your pattern to fill/be. To achieve this go to Edit, Fill, click on the drop down bar 'Use' to choose your pattern, then Custom Pattern where your selected new pattern should be available. Select your pattern then click "OK".
7. Your entire space should be filled with your stripe repeat pattern.
Mirror Repeat System
1. Using the paint bucket icon, fill the background with one colour.
2. Download a brush (stroke/watercolour) from brusheezey.
3. Make a new layer. In a different colour (complementary/contrasting) place one or a few strokes in the top left hand corner.
4. Duplicate layer, the free transform/transform and flip it horizontally, creating a mirrored effect.
5. Merge layer. Repeat the transformation, but instead of flipping this newly merged layer horizontally, flip it vertically to create a mirrored effect again.
6. Merge layers again and duplicate this design again by flipping it either horizontally or vertically in a way that allows for no visible division lines to be seen.
7. Select an area (square/rectangle) of your pattern with the rectangle marquee tool. Go to 'Edit', 'Define Pattern', Name it and press 'OK'.
8. Open a new blank page, and fill the area with your new pattern. Edit, Fill, Use, Pattern, select your Custom Pattern.
Doing the steps above I achieved this pattern.
Selecting a different section of my original pattern i was able to create a different pattern once again.
Once again, a different pattern merely by selecting a differing section of my original pattern.