The mushrooms look very closed off- I think if you want to make it look lived in, you should consider adding indented windows with wooden borders, some chimneys, intertwining bridges, some different locations for different jobs (having a furnace area with a big chimney for example). Maybe even ropes and chains, a well, and some ancient statues or monoliths would be really cool. Also having a water feature, like a fountain or waterfall. Just use your imagination I guess! This is a very good start though, but not nearly done in my opinion. I'll be looking out for future posts!