Nice one, Bob... but I still think it's a lot easier to set up elements in vector tools like inkscape and do the animations there - Undo-Button and all...
<img src="http://1.bp.blogspot.com/-ekTaHgI3Tao/Tsv-OhZE8YI/AAAAAAAAAFU/PFozyz_jIUY/s1600/tutorial_sample11b.jpg" border="0" />
The tutorials I am writing on inkscape should allow the simple creation of game art - with a lot of topics still in the pipeline (there is just not enough time in the day)....