You want to know something? When I took over PDF::Template, I knew nothing about PDFs, either. I actually wasn't intending on taking it over. I was tasked with adding a feature to my then-employer's PDF generating library. That feature would have required a complete rewrite of that library. Or, I could do a rewrite of PDF::Template and get its benefits (reports take half the time to write and look better). Turns out that the original author didn't want to maintain it anymore, so I took it over completely by accident. Frankly, some people would say that I still don't know anything about PDFs. :-)

As for spelling ... if the only impression someone will get of you and your skills is how well you write, I think it would behoove you to write well, whatever that means.