YOU NEED TO KNOW HOW TO DO A BORDER PSD FOR THIS. IF YOU DON'T KNOW HOW, CHECK OUT MY TUTORIALS ON IT!

border design: corner stripes

You'll be making something like:

The Steps

1. Choose which size you wanna use. Define the brush.

2. Zoom in (like 800%-1200%). Use the pencil tool to place the first stripe down. Make sure you have it correctly. I've labeled below what is correct and what is not.

3. Figure out how much space you want between the stripes, place the 2nd stripe.

4. Place the 3rd stripe. Make sure it's the same spacing as the first two. If yours is overlapping the border like this than use the rectangular marquee tool around the stuff overlapping and hit the backspace key on your keyboard to delete it.

5. Add another stripe. Delete all extra overlapping crap.
Before I deleted the overlapping:

After I deleted it:

6. I'm continuing my stripes. If you don't want to than skip this step.

7. Add the grey blocks. If you don't know how than -> {CLICK HERE}

This is the correct and incorrect way to do it.

and I have

8. Put the color #eaeaea or the color white in between each stripe starting from between the 2nd and 3rd stripes.

Finished: