it's not clear that this driveway goes down a full level from park street to the loading dock. adding the walls on both sides of the doc, and maybe some shadows might help show the elevation change. photo included for reference.
-----------------------REVISION 2:
thanks for adding the walls. unfortunately, the whole section still looks like it's at street level. is there anything that can be done to show that the south entrance starts at street level, but the north end is 1 story below street level? would more photos help?