Come on.
Look closely at this with me.
If we look critically at this first star of mine, we'll find a few points that aren't "just so". The horizontal lines in the fabric are all a few degrees off being horizontal. Hmmmm....What-ever! Those little things will not deter me from being pleased as pie with it!
I drew this star out on paper with a pencil compass and ruler, and made a pattern from it.