Cleanup Extension

Here is my work for the Mattepaint.com challenge.
I had to do a cleaning of the image, a fixed extension of the building and a replacement of the sky and a relighting. The first cleaning is mine and then for the set extension it is a base that the winner of the first part (Lasma Zeimule) gave to us.
It is always a pleasure to review all the tools for this kind of achievement, which is a very common task in matte painting.
If you want to make this kind of challenge, come to the discord of Mattepaint.com.
I hope you like.