Please ensure that your design is a seamless file. WBT is not responsible for NON seamless files (You must own the rights to the file you upload - We do not accept any designs that is a copyright infringement) Accepted File Formats : JPEG or PNG Image Resolution : Min Required - 150 dpi. WBT recommends image resolution to be 300 dpi. RGB VS CMYK : There may be a slight color difference depending on if your file is RGB/CMYK. For best color results, we suggest sRGB/RGB. Design Scale : Please keep in mind, if you choose to scale your own design WBT is not responsible for scaling that is too large or too small. We do not accept any copyright designs