Hey Tom, 
Good job, those look much nicer now!

I edited a couple that needed a bit more love. Their shape was cut of by trees.
e.g. https://www.openstreetmap.org/way/1333568636

When editing try to change your background imagery. Hit 'B' key or click on 'Background settings' on the right side. Then select either 'Esri World Imagery (Clarity) Beta' or ' CT ECO Orthoimagery (2019)'.  This will remove the trees for you. 

Then it's just as simple as drawing a bunch of straight lines by placing the nodes in the corners of parking lots.

Let me know how it goes.

Cheers
