Ok, call me lazy but, here is the easiest way to make a star.
Go to your tools options and locate the star from the Pre-set Shape Tool.
Select Star 6 this the shape we will be using. These settings are checked: Retain style, Anti-alias, Create as vector.
We will go to Effects now and select the Pinch effect. Use these settings: 50% Strength.
Now at this point you can make the star any color you want. All you have to do is go to the Magic Wand tool to highlight the star. Then once you have your color choice you can apply it and once your happy, save it.
I told you it would be easy....lol...
Here are the end results. I kept the star black so it would be easy to see. You can size it down to what ever size you want.
Congratulations!!! Let's see what you can do with your star.....
Ingrid