Method, computing device, and non-transitory computer-readable recording medium for customizing merchandise appearance

A method for customizing an appearance of a merchandise, suitable for being performed by a computing device in order to customize a customized choice result selected by a user, wherein the customized choice result comprises at least one designed element and merchandise information, the method comprising:

• receiving the merchandise information, and displaying a virtual merchandise image corresponding to the merchandise information;
• receiving the at least one designed element, and overlappingly displaying the at least one designed element on the virtual merchandise image;
• receiving at least one edit operation performed for the at least one designed element;
• editing the at least one designed element according to the at least one edit operation, and generating a customized virtual image;
• generating a customized amount according to a merchandise amount and a total element amount, and displaying the customized amount;
• and
• dynamically updating the total element amount whenever the at least one edit operation is completed, and dynamically updating the customized amount as the total element amount changes.
• wherein the merchandise amount is decided by the merchandise information, and
• wherein the total element amount is decided by the content of the customized virtual image.