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/A4t_fWlpk18?si=_csluaKGqEV3DUFE
Left handed tutorial: https://youtu.be/-zghfFKPv74?si=6qoHFsS8qytUd7nM