Here's the tutorial I used to make my star hot pads. I do have a few comments and suggestions.
First, notice her cutting of the first 2 layers. It's not accurate or straight. It doesn't need to be at that point. I'm all in favour of rough cuts.Trim it properly before you turn to the right side.
Use a cardboard template and draw around it. I googled pentagrams, used my quilting ruler to add to each side and enlarged it.
She doesn't seem to pad hers. I made a template for the padding and added it after the star is turned right side out. Notice how she draws lines from the midpoint of each side to determine the star folds? That's the template and placement for the inside batting layers. I used one layer of quilt batting and one layer of heat resistant batting. Just wiggle them into place. The batting layers will be stitched in place as you top stitch the star shape in place.
Got scraps? Well there you go.
And speaking of going, Patch has a great sale this week, and I found lots to follow me home. Yum!