OK so I have a 1997 Ford Aspire, and I wanna do a back and fronter bumper air damn and put what I think they call a belly pan or tray .. the part where you cover the underneath of you car , now I'm not one to let my car look a lil sloppy so I dont just wanna use some random plastic and have it look like crap, what would you recomend i I use ? and do you have any advice or instructions so I do it right the first time?

Im no proffessional but Im a quick learner. I'm looking to improve my MPG yet still remain having a nice car.