Simply email us within 12 hours. Be sure to include your order number! If you would like to change your design, please also include the URL or name of the new design. Otherwise, if it is the device type, case type, or color that you would like to adjust, please also let us know the details in email. If a price difference is incurred for higher value product(s) or upgrade in shipping method is required after the order is placed, you will need to settle the payment request sent by our Customer Service team at one go without separate installments.