Toooo sweet. The heat shield look's exactly like the shield for scotts merc.
Are you planning to glue the three layers together? The reason I ask is I thougt the double sided tape might work well here. You can get it as thin as scotch tape. Also gluing causes the paper to deform and wrinkle. When I built the heat shield for the merc I doubled the paper for strength and had this problem.
Take the red pill and see how deep the rabbit hole goes.