Ok, more realistic colours to sit on top of the underpainting. I have left the sky colouring irregular to begin the indication of clouds. Some of the red underpainting shows through on the greened up island.
I have begun to lighten the water surface, preserving the reflection of the church tower in front of the island.
The outline of a wood is indicated at the foot of the mountain range to the right of the painting, about half way up.