I decided to make some prints of how my wallpaper would look when printed as i hope to sell my designs as wallpaper amongst other things. So for each design i created a sample document of 22 inches x 1.5 metres by repeating my tile over and over.
In order to make sure that when my design is used as wallpaper, they are able to match up the print of one section to another and create into one seamless wall print, i have ensured the tiles are big enough so that i can fit two across the width. As opposed to one as i felt this may be too big and lose quality in the print.

I then simply copied my tile layer before merging them together and saving my image as a pdf.