For the first challenge, it was simply straight forward and quick to make, so I don’t have a comments to make. 
Regarding the Bevel Tool challenge, I extrude some faces of the base to make a bit more interesting, while, at the same time, trying to not go overboard with it in order to not encounter any problems in the future, due to my lack of experience in Blender.
“Mesh Objects Vs Mesh Data” challenge:
“Using The Bevel Tool” challenge:
Hopefully, it doesn’t give me any problems in future lectures.