None of your mappings was squared: After drawing the outline and tagging as a building, use the 'Q' key in the iD web editor to "square" the corners.

All your mappings were oversized. The humanitarian teams use the size of the buildings to estimate the number of people living there. This helps them to work out the approximate total population in the area and how much equipment or medication to bring with them. Buildings that are too big do not fit in with these calculations and lead to inaccuracies in the population count.

Fixed all. Please take care in the future.