We really wish we could add items to your order, but once it has been placed, your order enters our automated system with a batch printing queue, which makes it very difficult to make changes or additions once your order is in production.
We apologise for any inconvenience this may cause. To avoid this, we suggest taking your time to double-check your order before checking out to make sure everything you need is in your cart. This simple step can help you avoid having to place a separate order and paying extra shipping charges.