I think the contrast in these images is much too high. I’m not sure if this was the look you were going for, but there is nothing in any of the shots that holds my eye, sorry. The burnt out areas just distract me so much. Next time I would use an ND grad filter to balance the exposure, and make sure you are shooting in RAW to get the most out of your images.
I think you should be able to extract better quality from your 20D, the shots look a little soft. Try using a 3-stage USM in PS. Google for various techniques and values.