Strategy for interactively demonstrating the notion of decay

In this assignment, I tried to integreate vegetation and the building as a notion of decay. What I did with the building was that I have blended moss with the wall texture. so that it looks greenary in the texture. Also, I have covered the base of the building with the grass which I was trying to indicate invasion of vegetation to the building. Also, I have planted more trees in the decayed building than the original one.