Hi and welcome to OSM!

Thanks for adding all those parking lots. I just wanted to give you a few tips for future editing:

1) When editing, you can change the background imagery by pressing B and then selecting for e.g. 'Esri World Imagery (Clarity) Beta' or a newer version 'CT ECO Orthoimagery (2019)'.
They have much higher resolution and trees are without leaves for better visibility.

2) After you draw a parking lot area you can press Q to make its angles 90˚ which makes it shape more true to the reality.

3) Don't be afraid to place more nodes or move the nodes around to make the shape more accurate. As an example look at this parking lot near by: https://www.openstreetmap.org/way/1146150031

You can contact me any time in case you need help.

Cheers.