I love to decorate but hate to bake. Is there a good method for using box cake mixes.

Have you tried the "Cake Mix Doctor" series of cake recipes (Original "Cake Mix Doctor", then one with "Chocolate" in the title and one for cupcakes)? Easy recipes and usually foolproof. I use them when "from scratch" isn't working for my schedule and most of the ones I have tried have a good flavor. Good luck!!