I have just set up a new Flickr group for photos of children's artwork, the aim being to choose one from the group every so often for a regular feature on my blog Artful Adventures. So if your child has recently completed a masterpiece, why not add a photograph to exhibit it?
The address is:
www.flickr.com/groups/artfulkids/
(ps I have restricted it to drawings and paintings of children under the age of 12)