Welcome to OSM! Your contributions are looking good so far. Just a couple comments that I think I might have found helpful when I first started out:

When you deleted the building way (https://www.openstreetmap.org/way/323198533), the address tags on it were deleted as well and the new buildings don’t have any address info. Generally, it is preferable to modify an existing building rather than delete and redraw so that tags aren't lost and people can look at the history of changes: https://wiki.openstreetmap.org/wiki/Keep_the_history

In this particular case, I’m also not sure that this should be two different buildings. The street side facade across both is the same black paint and same window style, which makes me think these are the same building construction. Do you have some additional info otherwise? Either way is okay, it can always be sorted out later :-)