Ya'll talking about the flat wrap over the aft edge of a slider?
First make a pattern. Drape a piece of heavy gauge 4-mil plastic over the fuselage-canopy intersection. Tape the ends down on the sides of the fuselage. Cut away most of the excess, re-taping when needed. The goal is to develop a good flat pattern about 3 inches wider than the desired fairing. It's easy to make with clear 4-mil, as you can see through it and draw on it with a sharpie.
No compound curvature to this layup, so ordinary 9-oz plain weave will be easier to wet than a crowfoot. Lay it out on the cutting table, and draw around the pattern perimeter with a sharpie. Outline 4 plies, six if you want it thicker. Cut them out with a
pizza cutter.
Lay out another sheet of 4-mil on the table. Stack up
all the cut plies neatly on the sheet. Mix, oh, 200~300 grams of epoxy, and pour it all out on the stacked plies. Spread it around and let it soak down through the stack. If it looks like you'll have enough epoxy to wet it all, cover it with another 4-mil sheet and roll the assembly to ensure it is all wetted. Then roll it from center to edges so as to remove as much excess epoxy as possible. Roll the excess to some distant edge of the plastic sandwich. Cut off that section of plastic with the pizza wheel, and toss it, with all the excess epoxy, in the trash.
Lay the template on the stack and sharpie a cut line on the top sheet. Now cut with the pizza wheel, down through the top plastic, the wetted fabric, and the bottom plastic. Peel half the top plastic sheet and cut it off. (Note, there is a stacked and wetted layup here, 3rd and 4th photos:
http://www.vansairforce.com/community/showpost.php?p=693394&postcount=68) Peel the top plastic sheet.
Ready for the layup? Pick up the plastic-backed strip by the ends and fold it in half, plastic to plastic, one peeled half exposed. Position it on the airplane, so the peeled half is semi-stuck. Go around on the other side, reach across, pull the other half of the strip over the top; remember, it still has plastic on both sides, Starting at the top, peel the remaining plastic from the underside, sticking the wet fabric in position as you go. When it's in place, peel the long plastic top sheet. Slick it down (gloved hands work fine), and stipple out any air bubbles with a cut chip brush. Go have a beer. Pop it off after cure and trim to the final size.