How to edit canva template text, background color and elements

my Etsy shop for digital planners/invitations: https://www.etsy.com/shop/whatasimplelife
my Etsy store for digital sewing patterns: https://www.etsy.com/shop/madeby
Digital Journal website: https://www.whatasimplelife.com
Craft, sewing website: http://www.madebymt.com