Reversible crochet intarsia makes this an interactive no-wrong-side playmat.

The Reversible Intarsia Book Cozy in the same issue, is the ideal project to learn everything you need to know for completing this playmat. But if you want go straight for the “Happy Day Playmat”, this also begins with straight stitches, before introducing each of the different angled stitches, so you can learn as you go!