I'm working on painting a penguin underwater and I want it to be smooth, almost like glass. To create this look, I painted light greenish blue to start. When that was dry, I glazed green even more thinly so the blue would show over that. By letting the blue show through my layer of green, I create the look of light coming through the water.
I used this same technique to paint the seaweed. I painted them green to start, then lightly layered blue over them.
Your bottom layer must be dry before you paint over it. You’ll take it off when you apply your second layer if it isn't. Your second layer needs to be thin enough to let your top layer show, and the color of it really shouldn’t be noticeable. Blend out the edges of your top layer as much as possible. You only want to be able to see the effect it’s giving.
Painter of portraits and wildlife