Our Online Designer draws the photo/design to the edges along with the bleeds. In order to create a postcard with borders, the design should be made in an external tool, e.g. Photoshop or InDesign, and then uploaded into the Designer on the front side of the postcard.
Should you wish to design a postcard with a white border, please contact us: info@artibo.com asking for additional details re postcard dimensions, bleeds, etc.