Linked below is the pattern needed to complete the Reversible Baby Bib Tutorial from Whitney Sews. The pattern is being provided for free so it is intended for personal and gift giving use only.
The pattern already includes a 1/4 inch seam allowance.
When printing choose 'fit to page' or none'on scaling so it will print properly. You should end up with two printed pages. Cut out both pieces and tape together on the flat side. (It helps to then trace the entire piece onto a sturdier paper before using)