Battlemap behind the Tavern - Input wanted

[Merion]

Hi everyone,

I'm working on a little battlemap, it depicts the backcourt of a tavern including the outhouse. I'm not sure yet if some drunk thugs will ambush one or more PCs here or if the PCs will be the attackers.

Anyway my work in progress looks okay-ish, but somehow still lacking. That's why I came here to ask some more experienced mappers. I only made a few simple maps so far as I seldom find the time to create my own maps. I usually use freely available maps from the internet for my campaign.
For this one I plan to add a few light sources inside the outhouse - once I figure out how to do that with Campaign Cartographer. But maybe you have some other ideas what else to do with it.

Any input is appreciated!