On the extras page you can select the extra that best fits your needs. Select the extra clicking in “More Details” button. On this page you can check more about the selected extra. Select variation and click in “Add To Basket” to proceed your purchace. Your shopping cart will appear, where you can add discount coupons or complete your purchase by clicking on “Proceed to Checkout” On checkout page you need fill all required fields and click on “Place Order”