Your document needs to fulfill the following specification for upload and printing:

• dimension: 47 x 47 mm (safe area)
• without printing markes
• set up your Image / colour field in CMYK colours to prevent colour changes
• resolution pictures: at the minimum of 250dpi to get a perfect quality
• output format: PDF

For more information please have a look on the printing specs.

Please ensure you have the right to use any image you upload.