This pattern is only available as part of the “Beginner Granny Square Collection” eBook or as a video tutorial on the Meema Makes YouTube channel.

Right handed tutorial: https://youtu.be/aGJcME1_aq4?si=p4qSUGISBiIHcA6r
Left handed tutorial: https://youtu.be/SugS5QluEGg?si=vYwmE861zETLo3r8