You've come a long way since you've started. This map is very good, you have excellent efficiency in your use of assets and taken that time instead to give some real nice character to your shading. Consider trying out, for an especially bright lightsource, putting a second glow layer above the lineart so that it has more intensity. Also consider doing on a second glow layer, a scattering of dots (like you do on the floor but smaller) to represent dust/bugs in the air in a dirty area.

It's lovely, your color choices are great, I love those little punches of red, the walls have these meandering little alcoves that create an interesting irregularity to wander along... it's populated... this is a good map.