Sorry, for the inconvience. this is my first (and only) mood theme =( No, you haven't missed this piece. I made it as easiest as possible for me to post the theme and as there're a lot of tutorials ( plus installation code) and left it out. I'm really sorry.
So here is the installation code, which I made:
http://freenet-homepage.de/like_fairytales/moodtheme.txt

I also recommend two posts with installation instructions:
http://community.livejournal.com/crackified/603.html by crackified, there you have to change in the txt.file jpg to png

OR

http://lidi.livejournal.com/188999.html by lidi, but you have to customize the text a little bit, change gif to png.

I hope that everything will works fine and I'm really happy, that you like the theme. let me know if you need any further help, but I'll be away for the weekend. I'll be back on Sunday evening.