Hi Anya,

Assuming you were asking if the western most footprint here represents a building my answer is that, yes, it does, and I think that all the footprints you added here represent buildings. It is obscured by vegetation, but there is evidence to support mapping it as a building. I do not know the exact building you are refering to based on your description; you can add fix me tags with custom values to features to make them stand out https://wiki.openstreetmap.org/wiki/Key:fixme. The best way to point to a specific feature is to provide a link to its history (via the bottom right panel after selecting a feature in OSMCha) like this one. https://pewu.github.io/osm-history/#/way/1428825813 The best way to ensure you recieve feedback regarding your contributions is to make a note of such links and your questions, then ask someone about them during a mapathon.

Sometimes features are obscured by others in imagery e.g. tall buildings, vegetation, shadows, or clouds. Sometimes using another imagery source in these instances can allow you to view the feature of interest directly. Our goal is to map the ground truth accurately, so if the feature is obscured in all available sources, then use what you can see (and other map data) to estimate its shape, size, position and orientation. Think about what space is already occupied by other features e.g. Consider where a tree's trunk meets the ground.

I hope this answers your question. Thanks for your contribution.