The most important thing is to work in real size, it is advisable that when starting a design, first we know what size is the sheet in front of us. Make sure you have a good resolution to print. 150 dpi in digital is the minimum, although 300 dpi is ideal.

The design must have a 3 mm bleed on each side, which is an outer margin that you must leave on the edges of your designs to avoid having a white margin when cutting or directly eating part of the design that you want to be shown.

The final file has to be in CMYK, so you will also see a better approximation of what the colors will look like. Finally, send the file in PDF, which is the ideal format for printing.