You are allowed up to three links to locations where you display your own art and a signature banner up to 482 pixels wide x 60 pixels high. Put a space between each url and upload the banner on a new line.
Go to MyWC top left and Edit Signature.
You will see I have edited your signature to hide the url code. To do this copy the url then type the words you want to link to the url and highlight them. Now click the link icon
and paste the url into the box. This gives text which when clicked links to your website.