So I'm building a skid plate for my 94 XJ, I want it to protect the oil pan area, transmissions and transfer case area. This is my out line so far any thoughts or comments? Should I even cover the oil pan? The red are bolt spots and the purple hard lines are where the final metal one will bend , cardboard doesnt really stay up lol. This will be attached to the sides and to the middle of the xj. I'm completely new to this so dont be harsh but if I'm doing something wrong let me know before I do this on metal

 

I'd make three separate pieces for ease of maintenance.