I chose to clip my template shorter so I didn't have to deal with the ends all meeting in the middle. You don't have to you can have yours without the hole but I just make a yoyo and sew it over the hole or I thought I might try doing the herringbone stitch around the raw edge in the middle and add a button in the center. It's just a design choice. I hate to mess with the center getting all puffy so I don't do it that way. It 's just like the center of an eight ponted star. You just have to be good at getting the fabric joined right so it doesn't puff up and I am not that great at it so I skip it. It's the easy way out for me.
When I learned to do a friendship circle that is how it was done on those with the yoyo in the center.