Harry Potter and the Sorcerer's Stone
As is so often the case during the making of the artwork for the one sheet, lots of changes were required. That's why you'll probably find other versions for different purposes. In the end they even did some minor additions with the computer. As for the CD release, they needed artwork before the finished painting was delivered, so they used a comprehensive sketch Drew did in preparation for the finished painting. To view the original artwork, visit Drew's site. There, the magic truly begins.