Murky said: Welcome to the forums! Your photo didn't upload though, try it again.
I know there are often ornmental crests along a roof line, that also serve to keep birds off of the roof and keep their poop off the glass. Finial for one point? I'm trying to picture what you're describing.
Murky said: Designing your own sounds like fun! I've seen images from just geometric designs to dragons and gargoyles and pirates and weather vanes and everything in between. You know you now have to give us updated photos when it's completed!