@Alkorri: I enjoy the fact that for one of your first maps it doesn't fall into the common mistake of making it too big. Everything is nice and compact and using the space well. Props there!
You could probably get away with using the blue sign on the wall if you edit the sprite a bit. As it is now, it really looks to heavy to sit on a wall. If you cut the 'legs' off and bring the top down a bit so it isn't as bulky looking it might look a bit better.
I'm too lazy to test how well it works myself though, but here:
The other thing that jumps out to me is that you have stairs leading up to what, for all intents, looks like the back of the alter. And I know that that isn't your fault, because they don't offer a back of the alter tile, so here:
again, fair warning that I am far too lazy to test how well that looks in game, but if anyone wants to snatch those up for whatever reason, they can.
Anyway, all that needless nitpicking aside, it's a nice map!