Thats repairable step 1 is to look around for some old dented up panels bonnets, doors ect
get some of these,
http://www.toolbarn.com/product/bosch/2610917944/
mark out some neat squares and triangles on the old panels then practice cutting out the shapes neatly.
step 2 will be to fabricate a few patch's for the holes you have cut out. you need to find some 0.8mm steel sheet to practice making patch's. find a sheet metal fabricator they will sell offcuts for beer money.