This is the first few layers of base colour for the octopus. There's still a very long way to go.
The bottom layer is a mass of red and blue veins over a dark base. You probably can't see much of that at this stage as the top layer is 100% opaque. Then the base colour is overlaid with a rough sponge stamp.
I haven't touched the inside of the tentacles really. The brushes go through to the far side of the objects so I'll just end up painting all over them by mistake. I'll do them later with smaller brushes.