i think once you have the template you've pretty much heading downhill till you reach bogging/filling/sanding. glue/staple on some stretchy cloth over your template and then start fiberglassin from the back. add a layer of resin followed by fiberglass mat then repeat till you have it strong (not exactly sure but id say 3 layers would suffice). be sure not to fiberglass any parts where you want guages or whatever (just cut the stretchy cloth once your finished). then just bog/fill and sand to your hearts content till its smooth and shaped and cover with vinyl or paint.
ps dont take this as gospel

just a guide