This portrait of Harry Potter, done shortly before the release of the 2nd film of the series, originally had a different background planned, but I changed it to a more traditional gothic setting midway through.

Here, you can see the original sketch along with the early airbrushed layers of color, and then further layers of paint and colored pencil added to the face and hands. After deciding to change the setting, a thick layer of gesso covered up the previous background. The new wall was then sketched in, and painted in layers from light to dark. The clothing and fire were painted in last.