Thank you Dennis, Nolan & Win.
I kept running out of my little dark puddle & having to make more, in the end i think i used too much water & layers in the dark trees, trying to get them darker, but when that area dried, the dark i thought I was applying seemed to fade. Does this make any sense?
I also would love to do this again, and work on the Left side of the building - I would've liked to leave some more lights.
I loved this exercise Dennis - Thank you,

I even had a go @ doing a cauliflower & working it out.