Welcome to the Cake Decorators Q&A

Hi, could you please give me right propotions used to prepare white chocolate clay?

The white modelling chocolate for the roses in the tutorial is premade and purchased from cake decorating suppliers. I think Paul buys his from Squire’s Kitchen but it is available online. If you’d like to make your own there are recipes here http://www.hungryhappenings.com/p/chocolate-making-tips.html. If I have misunderstood your question please post again.