I didn't think to have effects of the lightning on building because the lightning is set behind the building in PS. Hmm...For the big light it is very visible, for the 2 small ones, not very. But maybe would be a good idea to set lightnings in front of it then add a small blue area on?
PSD file
Tavern.def
Tavern1.def (no shadow)

The 3rd link has the tavern with external shadow, lightnings will not generate shadow.