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/oldvaLJfDa0?si=v22pGIMlSBcTS2Y3
Left handed tutorial: https://youtu.be/DZpFJPyZeiE?si=P_3RIg7yzyMDTF8B