Making Larger Cakes

KIM QUESTIONI have a question about augmenting your White Chocolate Whisper Cake for use in my friend's wedding cake. Is there a rule of thumb I can go by when converting any of your cakes to larger or smaller sizes? I hope to achieve the larger volume of the recipes you've designed in your wedding cake section of the Cake Bible. The tiers are slightly higher and more dramatic than the recipes from the butter cake chapter. Thanks so much, As always, your devoted fan, Kim ROSE REPLY In my new book I plan to work on creating recipes for larger cakes based on favorite smaller ones. It can sometimes taken many tests to get it right. One of the cakes I've planned on is the white chocolate whisper cake! I think that's one that won't require much adjustment. You simply need to decrease the baking powder in proportion to the amount of flour as indicated in the charts in the wedding cake section. Do let me know how it works for you so it will give me a leg up on my recipe testing!