Hmmm, personally I wouldn't waste my time with this, you are looking to spend thousands of dollars to reproduce a glass that can purchased for a couple of hundred at the most. The defroster is usually done with conductive paint, although in some cases wire is still used. And that's a whole separate procedure. The back glass is usually tempered not laminated, not sure what the effects of a defroster on a laminated piece of glass will be on the defroster capabilities. The tooling alone for a compound curvature tempered glass like the lancer will cost thousand of dollars plus the tempering furnace used is very expensive, so I assume you are going to using laminated glass. Again I don't see the sense of spending thousands of dollars to make a 200 dollar glass that is readily available. If you insist though, I would try contact paper on the back glass, trace the existing frit line, then lay flat carefully measure everything and then try to copy that into corel but chances are the measurements will be off and it will be very labor intensive. I cannot stress enough that it will much much easier and much much less expensive to buy an replacement glass than to try to reproduce one, it would probably be easier to hand make a metal fender rather than buying a replacement than trying to make a new glass. You might notice that car body change slightly form year to year but the glass remains the same just because glass production is so expensive and complicated
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