Like TVR said, I think you should increase the exposure. Great start though. I especially like the first picture. Also, if you make your pics smaller, the resolution will be a little bit better.
Few more from me, i have done as you said and increased the brightness of these from the last ones. Next thing i need to learn to do is get rid of the watermark thing and add a signature...its still a working process for me.
Lotus Carlton on phototravel
Lotus Carlton have a slide on at Tsukuba wet
Flying Alfa Touring car at Costa del Alamfi reverse
