OK, I'll take u @ ur word about wanting constructive criticism. As a professional photographer, I do not like the optical distortion on the vehicles. Be careful of over using that wide angle lens as it typically not flattering to cars or people. Try and shoot either early or late in the day so the lighting is giving you a dramatic effect. Pictures taken at high noon are typically in flat light and lack that something special. Trust me, it's all about the lighting. Look around and see if there are nay environmental elements that might enhance the shot. White fences, large trees, lakes something that adds a natural beauty to the photo.
Graphically I believe you went over board with the glows which makes the type difficult to read, though I like the idea. IMO it's about your work and the graphics and "artsie" photos are too much of a distraction. Change your point of view, get low, stand on a ladder or head on p.o.v. with your photography - it's all good, but try keeping the focal length closer to 35-50mm. And the tilted framing is not my taste as again it's the first thing you see when looking at the photo and not your detailing prowless. Some tight shots of the paint and other nicely detail surfaces would also help to communicate your services. Don't forget about interiors. If at all possible, I would really like being about to personally control the speed of the slideshow and to click on a frame and have it enlarge to 100% to see details in the car.
Hope I've helped a little and trust me, I know how difficult it is to assemble something like a website. Remember, it's something that will always remain a work in progress. Best of luck.
