I reworked the transition from horizontal to vertical planes in the curve, trying to make it smooth and believable, and less abrupt. I had to add some subtle darks along the edges of the curve, and lighten the color at the front of the horizontal plane. It looks a lot better than at the end of the last session. I glazed some ultramarine blue on the edge of the diagonal shadow, which I think makes the light more convincing. The white hose is done, I hope. And I started adding yellow color layers to the bottom of the tank. It'll take many layers, going back and forth from lighter scumble to darker glaze, to get the color right.