I've been researching the various ways to hold your pencil when drawing. One of the things I found was a YouTube video at this link . It's from Proko. It looks interesting. I'm thinking of trying it after this post. I recommend giving the technique a try. Update: There's another video, this one from Fine Art Tips, about how to hold your pencil when drawing. It's at  https://youtu.be/TKagPZSLq6Y .