I tend to find a photo of the knife I want to attempt that is as close to a perfect profile shot as possible. Then print it out (you may have to adjust the size a couple of times so set to low ink the first go) and cut out the profile of the blade and trace that onto the steel and start grindin'. I think there is a link in the count's new guy post to a bunch of generic templates. Speaking of, you're not likely to find an exact template of a production knife unless someone has already made one and posted it somewhere. If you have the knife you can outline it on the steel like a paper template. I have a RAT3, which I absolutely love, and traced it onto steel. Its not as perfect but you can put some time into it and touch it up.