Wall Of The Citadel - stage 4

Like most of my work these days this painting is really about in this case a colour, red, with the seeming subject of the painting hanging off this simple idea. 
         It's nice to get back to painting after a few days away from the studio with today's session concentrating on getting in the sky and background buildings. However I first had to get in the palm trees at top as I wanted to cut the sky into the shapes a bit so they had to come first. I'm trying to keep white out of any colour mixes to keep it as rich and warm as I can so all the mixes so far are made up of transparent or semi-opaque paint.