This may sound silly, but stick with me. Lace your fingers together. Which thumb is on top? Left or right? Now switch it around so the other one is on top. Does that feel weird?
It does for me. I’m a right thumb on top person and although not uncomfortable it just doesn’t feel natural to me if my left thumb is on top.
Of course, there’s no correct way to lace your fingers together. You just do it however feels natural.
This is true of many of our postures and hand positions when beading. There’s no one right way to do it, but some positions will feel better for you than others.
Check out this 2 minute video to learn about different ways to hold your beads when doing peyote stitch. You’ll have more fun and work more efficiently when you hold the beads in the way that is most comfortable for you.