I want to create a new INVERT layer that can be found on the bottom of the layer box.

painting composition



painting composition

Set the mode to linear light.

painting composition

I like the color now. Now it is time to paint a little bit (I've never thought it will be a painted illustration). So create a new layer and begin.

painting composition
  


I've used this brush.

painting composition



painting composition



painting composition

Result:

painting composition

Set some details.

painting composition