Hello. Welcome to the Chilean OSM community.
What is this project about? Who is in charge?
There is a lot in your edition to be corrected. Hard to think that an experienced mapper is supervising this. But it is not your fault. Is there someone who I can talk to?

for starters: please draw the base of the buildings, each one separately, and the "square" them using the letter Q. The ones you drew are totally hand crafted and tend to group separated buildings.
regards