I think the site looks a little confused. You have a few nice photos and then there are others that are a long way behind in standard. Only ever show your very best work.
You have repeat photos for no apparent reason, you're the photographer, you should know which is best, pick one - example, fire engine.
A lot of your work is done in very bad light and lacks any composition. Most of images lack punch.
Your need to improve your post processing hugely.
Overall your site comprises images of a very mixed quality and the bad images (subjective, but you did ask!) drag down the rest. You need to be ruthless about your image selection.
Your site design looks desperately old fashioned. There are far better templates available from Zenfolio.
I'm not sure why you have a Guestbook or Favourites options. They don't sit well on a professional photographers website.
Your watermark bang in the middle of your images is very distracting and obscures your photos.
I'm sure you have used Flickr. Take a look around at the quality of the images you are up against and I think you may rethink your plans.
Example image:-
http://www.robertdickinsonphotodesign.co.uk/birds_and_wildlife/h65e76c06#h65e76c06
Badly lit, no composition, and the bird looks weird.
Sorry, Robert, but I honestly think the standard of your work needs to improve, though you do have one or two images that show some capability.