Don't make stars the hard way like I've been doing for years! I made them with a built in addon called Add Mesh: Extra Objects. It gives you a mesh based star and making it round is finicky and it looks bad.
Few days ago, while creating a project, I realized, I could make stars with a bezier curve. You can easily make all kinds of star shapes by adjusting the individual points of the curve. The result is smooth and controllable. On top of that you can give depth to it.