Hello. Thanks for mapping
I am afraid that you are aware how the mapping of buildings works.
If this is a 1 time event for you, forget it. Otherwise, follow the lessons how to map.
Check this website:
https://learnosm.org/en/hot-tips/tracing-round-buildings/
I remove the odd mappings. 
I review your other changesets as well and, if they are of the same quality, I remove them too.
Best regards.
