To preview your design or just want to see how it looks. You can print them via Print feature.
#1 After prepares your design, go to menu Print, the setting box show on with some option for size print. Select the preset size or enter your custom size via Custom field. A centimeter is the unit of size.
#2 Click on Download if you want to have an image of the design. Click on Print Now to select print devices for printing.