I have looked at every topsy turvy cake here, and I am not sure how they stay up. When you make one do you carve it that way, or are there pans you can buy that make them that way. I am some what new at cake decorating. Another thing I would like to know, is what is the right way to use luster dust? I hope someone out there can or will help me. 
Here are some instructions for making topsy turvy cakes:
http://www.cakecentral.com/article1-Instructions-For-Building-A-Whimsical-Tilted-Cake.html
http://www.cakejournal.com/2007/07/how-to-make-two-tired-whimsical-cake.html
http://members.nuvox.net/~zt.proicer/message/saved/TILTEDCAKES.htm
As for luster dust, you can apply it wet or dry using a soft, sable brush. When applied dry, the dust can come off when touched so steam the dusted pieces to set the dust. To apply wet, mix the luster dust with vodka/extract until it is paint consistency (or heavy whipping cream consistency).
This thread by ShirleyW on dusts will give you more info: http://forum.cakecentral.com/cake-decorating-ftopict-54059.html
Hi and Welcome, CakesOnly. 
You can also create that look by using wedges between the tiers:
http://forum.cakecentral.com/cake-decorating-ftopicp-3447903-.html
HTH
Doug found a Whimsey /Tilted cake tutorial link a few days ago and created a thread to show us:
http://forum.cakecentral.com/cake-decorating-ftopict-383903-whimsey.html+tutorial
Very useful information!
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