Lay out your pretzels on the wax paper in “starburst” arrangements of 6 or 8 pretzels.
After melting your white chocolate/bark coating, place in a baggie and cut the corner off. Start piping your chocolate in the middle of the pretzel arrangement, making sure to coat all the pretzels.
Continue piping outward around the pretzels, until you have a web. Then, place two raisins in the middle for the body of the spider.
Melt your regular chocolate and pipe over the raisins. I found that the spiders turned out better when I piped the legs of the spider first and then did the body. Place in the fridge for a few minutes until the chocolate is hard. Then, gently peel back the wax paper…and eat!