Remember your tessellation pattern should have at least 40 repeated tiles using 4 to 3 colors. The more your repeat the better grade you will get!
If you have completely finished this you may go online and find a product to which you think your pattern would look good on ie a shoe, hat, backpack etc. It must be high Resolution. once your have it delete the background and enhance the photo of the product using Image>adjustments in Photoshop