How to setup and download files when designing in Canva Pro
Here are some steps to help get your DTF Designs setup properly in Canva:
When choosing a "Custom size" for your design, set the unit to 'in' (inches) and enter the exact Width and Height you want your design printed.
Enlarge your artwork/design to the edge of the page
When your design is finished, click the "Share" button
Click the "Download" option
File type should be set to PNG
Make sure the size in pixels matches the size in inches. The Canva default 'Size x 1' is not the correct size. If in doubt, increase to the maximum size. This will ensure your file is high quality.