Hi j_lee59, 
Thanks for mapping the area! I noticed a couple of issues with your mapped elements/features:
 
1. Many of your mapped buildings are not square enough. To solve this simply press the "Q" key on your keyboard. This will square the selected area. 
2. The outlines of the buildings are not traced accurately.  

This happens when we are new to mapping. With a bit of practice and knowledge, you’ll get better at it.

 If you wish to learn from experts, here is a link to training videos from HOT: https://wiki.openstreetmap.org/wiki/Humanitarian_OSM_Team/Open_Mapping_Hub_-_Asia_Pacific/Open_Mapping_Guru_Project/OM_Guru_Network_Trainings#Training_Schedule_and_Resources 

Thank you :)