You can get CafePress products with graphic included that will link to your store on your blog or site with these steps. You must be familiar with inserting images and links into web pages or blog posts.
Now go to your CafePress store
Select the image you want to copy.

right click the image and choose "Save image location"
Now paste the image link into the "image url" option of the image insertion panel for your blog or page editor.
right click the image and choose the "copy link location"
