This will add bleed to the design and crop marks to the output file. If your file does not have the required layout, there will be a delay in your printing. Additionally, please leave a few millimetres on the inside of the bleed line to ensure your important contents are not trimmed due to print tolerance.
Canva, by default, does not output a file that will print well. At the time of writing, you do not need a pro licence. Follow the instruction on the linked page.