Add an artwork (or several artworks) to your cart, as you normally would.
2. Once you are ready to checkout, look at the Order Summary & find the “Discount Code” field on the right (on desktop) and at the bottom (on mobile).
3. Input your discount code in the field, hit the Apply button next to it, and your subtotal will be updated, along with a the discount code's name to show that it was successfully applied.
4. You will also get a second chance to apply a code in the Payment section while checking out.