We welcome you as a new mapper.
Thanks for your contribution to this project.
Your changesets are reviewed by a Global Validator to check that the tasks have been mapped in accordance with the quality standards of HOTOSM. 
We cannot expect from a new mapper that he/she delivers high-quality mappings from the start, so we offer some guidance.
Please pay attention to the next summarized issues. (see attached document with examples for more info)
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Issues found on your mappings
A: Inaccurate mapping. 
B: Overlapping buildings.
C: Collecting adjacent buildings and mapped it as 1 building.
D: Connecting Nodes to other features.

E: Buildings not squared or rounded.

High building(s) incorrect mapped. 
Check this footage how to map high buildings

https://youtu.be/dsfUcslLtVc?si=yH6eWDbsb_ILAVb9
 Or See par 20 chapter About Buildings


Explanation can be found in this document what  might be helpful to strengthen your mapping skills
https://docs.google.com/document/d/1Swwz-ZwM3_YOstqstsmCg1-lNAPbnMLpi1Al-h-2UOQ/edit


Best regards and keep mapping!
Frans S