I can see it most easily if I open the Layers menu (button on the
right) and enable "Map Data". Looking at your tagging, I think it's
The main thing to remember is that what you see by default on
openstreetmap.org is only one way of rendering the data. The main
render clearly doesn't do anything to emphasise building-parts. But
your mapping looks good - please be assured, your efforts are not
wasted! - the improved detail gets used in routing applications, other
I think from reading
https://wiki.openstreetmap.org/wiki/OpenLevelUp that the shops would need level=0 adding if they are on the ground floor:
"The main tag is level=*, only object having a level value (or member of a type=level relation) are shown on map."
About a year ago I added shops in Wolverhampton City Centre, and where there were two levels I added -1 on the lower level (as most were at the same level as Dudley Street. These show here:
https://openlevelup.net/?l=-1#18/52.58442/-2.12760 but switching levels doesn't show the level 0 shops I added without the tag (though does show some things I didn't add that do have the tag).