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/7WnB2kLqSLU?si=uKt3AVaixe7YrjP1
Left handed tutorial: https://youtu.be/3WH4zRMnjg8?si=61aSP32JfmRKMzIq