Free pattern bag belt from Bilbilak.
Step 1: print on paper of desired size 1:1 (100%); How to print paper 1:1? When you print it, check the printer properties to not change the settings according to the page, it should be "none", also you need to set all margins to "0" (if your software has a margins option, do this, if not, just leave it there) then you will get a 1:1 property printout.
Step 2: stick them on heavy craft paper.
Step 3: cut the paper and do it!