Welcome to OSM! 

Many of the footprints yo added here envelope multiple buildings. Each building should be mapped with its own footprint. Use plots, shadows, and colours to discriminate between adjacent buildings. 

Please keep this feedback in mind when contributing in future. Thank you for your contribution. If you want to experience the OSM community or to get timely feedback from other mappers; I recommend that you attend a mapathon. You can find events here https://osmcal.org/