Hi!
Thanks for editing. Few things I noticed there and there.

Sometimes you draw sidewalk on top of another sidewalk line, which creates a duplicated object.

.. and the section where there is a pedestrian crossing is normally tagged as footway=crossing instead of footway=sidewalk.
Have a look here at the first example: 
https://wiki.openstreetmap.org/wiki/Key:footway#Examples

Cheers