From Mardon
Find something that's generally dry and take a photo of it when it's wet. Photos of females in wet T-shirts are not allowed because it would be too easy to get favorable comments from reviewing males even if the photo's technical quality is garbage. Other than that, put on your raincoat, grab your umbrella and go for it! Sample photo: "http://www.justphotos.ca/galleries/macro/images/013781.jpg"