Click the buttons to add commands. Click Clear Script to clear the script. Press Run Script to run the script. Click on the character to change costume, there are 3 of them.
I took the original and added a save/load function, fixed up the buttons a little bit, and fixed the run script only performing an action once per script. Also... Oh man, I can't believe I made the original more than 2 years ago. So much has changed since then. I remember posting in the forums asking how to make it save, ahhh, good times.