Nice style - it looks authentically primitive, and I'm liking the names.
I notice this is in the finished maps section, but I hope you are still open to suggestions.
I'd say, first, the wood looks rather fresh and new. If you were able to age it a bit (make it darker, give it a rough-ish texture). Second, could you run a displacement filter over the burnt lines? That would make it look like the lines are burnt into the bumpy surface of the wood, which it doesn't quite do, at the moment. Displacement filters are a bit trickier than other PS filters, but if you don't know about them I'm sure there are plenty of tutorials online. Third (and probably less important) what about replacing the white background with something (eg wooden wall planks, dirt/stone floor).