Does anyone have a decorator  frosting recipe or suggestions for Decorator frosting to make it hold shape? I have tried a few recipes but none I have found seem to hold shape especially after adding the gel coloring. Should add cornstarch? More powdered sugar? And also it better to use ALL-Vegetable Shortening or Vegetable shortening that contains some animals fats?

This is a great one.  It is easy to make, easy to pipe with, holds it's shape and most importontly taste great :)  https://www.cakecentral.com/recipe/22469/2-icing