I am going to attempt my first Rice Crispie Treats covered in modeling chocolate but have a couple of questions and I know my fellow CCers will have the answers.

Question 1 - can I use edible markers on the modeling chocolate to paint the designs I want after I cover the RCT?

Question 2 - can I make this ahead of time and put it in the freezer until I serve the cake? (next Saturday).

The RCT will be a skateboard with some pretty detailed designs on it, so I would love to have that part of the cake done ahead of time.