I am doing mosaics in the crumbled pavement tiles (near the station). I turn negative places into not negative, I equalize situation. But it does not create an additional layer on top of that what is already. It is like doing dental work - like sealing the teeth.
 

In fact, I filling city holes by my wounds and make it nothealing. Passers-by will be able to walk on them, usually they will not even be noticing it like they
do not notice their teeth seals. They will be useful more effectively push your luggage (from) the station (to). The oral cavity (station) of the city will function a little more efficient, prostitute high heel will not snag