Chasing the sunset...again

On the way home tonight I could see a fairly decent sunset shaping up so I dashed away from my route home to find somewhere to take some shots. I ended up on a farm lane and took this...only the one shot as a tractor was coming. I drove elsewhere and managed a few more. I had a polarising filter on the lens which was great for capturing the detail however I have ended up with clouds that have come out darker than they really were. I think its time to learn Photoshop!!