If you are referring to pinning during piecing, I pin across with the point to the right and the head to the left so I can pull them out with my left hand as they get close to the presser foot/needle. I am right handed but my mom was left handed and I do several things like ironing left handed because that was the way she taught me so maybe I pin backwards too....... But if you are referring to pinning on making the quilt sandwich, I only use safety pins and try to space them 4-6 inches apart all over the quilt.