Some interesting art blogs and mendhi hand painting
When searching the web for mendhi hand decoration I came across an American artist who is inspired by mendhi patterns and she incorporates them into paintings such as one example here. Mendhi is decoration on the skin, mainly hands and feet, using henna and is a custom for Indian women, and also in Afghanistan and I presume other Middle Eastern countries. Samples of Heather Robinson's paintings can be found here.
Here is another interesting website. This website is about collages.