An older painting that I never finished- Learning from my mistakes

Only because it was done in oil paint with on top of acrylic airbrush. Once you use oil paint you cannot use acrylics again. I should have thought about that but sometimes making a mistake is learning. While shopping at my favorite store the other day.....Omer Deserres, they had a new product sample at the cash which is oil paint that mixes with water.....how amazing. I will give it a try on this painting because otherwise I would have to wait until the spring to work outdoors because of the smell of the turpentine or similar solvents. So here is the painting in it's fix up stage and I will come back when finished to post the final results. I am not sure how I want to conclude it....its the center part that needs the work.