I bet this sends shudders down the spines of people who are afraid of spiders. Your image gives a sense of impending trouble, as if all it needs is a little organ music before it slowly scampers onto someone's neck, or pounces on some victim from out of the shadow. Very nice capture. The bits of spider silk are great too.
This image could have used a little fill flash. The positioning of the spider is really good; however, the lighting draws my attention to the plant to the right of the spider instead of on the spider itself.