Light tree against dark background

After all these attempts, I think I would be better off trying a dark tree against a light background!!

I tried and I tried.

Too wet-on-dry. Blocky and dull.

Too wet-on-wet. And the colours shifted too much when the paint dried. 

Another one that didn't work out. Unsightly bloom just in the wrong place. Still not what I had in mind. Time to take a deep breath.