Well, don't hesitate to ask for pointers. The best advice I've ever found was all right here. Everyone was doing fiberglass seats and they looked amazing but, as with most builders we always look to "one up" the next guy/gal so I noticed a few cats doing up some seats by cutting up an old tank and stretching it over the existing seat pan. I wasn't very good with glass so this seemed like the obvious choice. Brazed it up, lots of grinding sanding and filling and viola, I had a new seat. There are a ton of different ways to build them in here. I would take a look at a few threads and borrow a bit from each to come up with something all your own. Once again, don't hesitate to ask. I've yet to meet anyone in here that wasn't happy to give some direction. Same for tuning.
Now, get er done.
Canuck