Boot floor extension panel template

Does anyone have an uninstalled boot floor extension panel that they could trace onto a piece of paper for a pattern? I'm in the process of straightening and replacing the floor in my half-Elf trailer. Since the slam panel is badly deformed, and I don't have a proper rear valance to use, I need a guide for getting the shape right. I'm going to put a flat floor in, but I need to get the outer skin and slam panel bent into the proper shape before I weld it back together.