Welcome to OSM and thank you for your contribution! 

I've reviewed this contribution, and the following is my evaluation. This changeset is a bit of a mixed bag. Generally you improved the accuracy of existing building footprints while preserving their history, and added some that represent buildings, which is really good. However some of these footprints could be more accurate and at times envelope multiple buildings. I'll give you some general comments about the mistakes I see here. It may seem like a lot, so I recommend starting by watching the videos. Idealy attend a mapping event where someone can show you in real time how to improve the mapping here. You can find events at https://osmcal.org/

Each footprint should represent a building. Make a note of how a scene is lit, in which direction shadows are cast, and whether you can see the sides of features with height. A change in colour and difinitive shadows can indicate a building. Lookout for features like highways, barriers, and vegetation which may look similar to buildings. Although we are not always mapping other features, considering them will mean you better understand the context improving your interpretation of imagery. Cross referencing an imagery with different properties can help. Sometimes buildings may appear to share a common wall, but this is sometimes an illusion; only map them with shared nodes if you have reason to believe that they really do touch.

When mapping buildings, please trace the shape accurately. Accurate building footpritns aid population estimates and prevent issues like data overlaps. Zoom in so that you can see the outline of the building and mark the corners carefully. Exclude shadows and yards when tracing the footprint. Keep in mind that you are looking at the [roofs of buildings](https://wiki.openstreetmap.org/wiki/Key:roof:shape#Roof_shape), but mapping their footprints. Depending on how the scene is lit, pitched roofs may have light and dark sections that belong to one building. Generally pitched roofs overhang the walls of a building, so a footprint slightly smaller than the roof is accurate. You can scale selected features in ID with shift+(-/+), or JOSM with ctrl.+alt+Lclick & drag.  Take care to make contributions that others can build upon.

After tracing and tagging features which are likely square or round, please remember to square their corners (q), or circularise them (o), because it is almost impossible and time consuming to draw shapes so percisely by hand. Buildings with metal or pitched roofs tend to have square corners; round buildings are identifiable by the distinctive cresent shaped shadow they cast. Unless the building is clearly a different shape then it's best to assume that it should be rounded or its corners should be squared. In the iD Editor, you can right click for access to editing functions. Since roofs tend to overhang walls trace the initial shape slightly smaller to allow a buffer for any change in size that may occur. In JOSM use the [buildingstools plugin](https://wiki.openstreetmap.org/wiki/JOSM/Plugins/BuildingsTools). In ID you must draw the shape accurately enough else shapes will not completely square. This [video about squaring features in ID](https://youtu.be/Xs5wX592E1o) has more information and a demo.

When mapping with imagery captured at an angle, please position features where they are at ground level. You can map the outline of the roof and then reposition the building to the base of the walls. I recommend you watch this [video about mapping dense urban areas](https://youtu.be/JAPiGntG6fs) and read this [written guide](https://wiki.openstreetmap.org/wiki/Roof_modelling#Typical_errors_in_the_interpretation_of_roof_geometry_from_aerial_images).

Keep on mapping!

