The only thing I would add to the posts I made in the thread above is that if you cook a painted Fimo head for a long time, some colours , particularly the yellows and Burnt Siena , tend to get a little more intense. I left a painted head in the oven recently and forgot about it whilst on the 'phone , and he came out looking like he'd been to the tanning parlour : so take care : ten minutes is often enough .