So I need to ask, kinda would like to know your design idea, anyhow on the sides the cardboard looks flat against the wind flow, the area past the handle bars.Is this going to disappear when finish out the front cone, like mold into the front with some curvature ?I see what you have, is air vents going to be in that area so air pass and does not create a drag, if that is the right word.Not even a curve, just a plater piece coming of the front narrower piece, on a angle, to meet and blend into the outer (wider) side panels. If the design was for fastening to frame, could you still not blend in such a piece so you get a smooth air flow over the ride ? just hit me, your project, more wondering what and how you do this, like I said " very interesting to me " and I enjoy it all.Happy Holidays to All