Great shot. I too think it's a little bit blury, but when I first looked at it, all I could see were the colours and the beautiful light coming through the web.
I love spiders! Ok, so I may be a little bit weird...
I hate spiders but your photo is a great piece of art. First of all - great concept - I love the way the spider is the only source of color in this picture. Second - stunning light and angle - well mixed for a very good effect. Thrid - very good sharpness of the spider and its web with blurred background. Well done!