As part of the new display at the recently opened and newly refurbished Jewellery Gallery at the V&A , there is a great information video by Jane Short, on how an enamel is created.
By the wonders of the internet it is possible to click here > Jane Short's Enamel Brooch Video to view the clip which is also on display in the gallery.
If you have time click around the new V&A website, there is plenty of other interactive entertainment to be had ranging from making your own kaleidoscope images to listening to talks on various aspects of the collections.