Tip No. 4:
Use a Light Ground
I usually avoid a white canvas to start, so this is new for me.
Tip No. 5:
Don't thin with water, water ruins the consistency of the paint
Tip No. 6:
Use a Soft Brush
As you can see here, even though I used a soft brush, it was a square one, and you can see the brushstrokes.
I'm up to four layers, 10 more to go - maybe.