It's important to be just a bit larger than life- but not too much. Speak a bit louder than normal, but don't yell. Movements and mannerisms should be a little more pronounced, mainly because stage productions are harder to hear and see than taped ones. GC and Gn2 are the experts here, so hopefully they'll weigh in on this one.
I remember one thing I learned in drama with regards to Shakespeare: know what the hell your character is saying and why. Shakespearean dialogue can be daunting for many practiced, classically trained actors- it really helps to have as thorough an understanding of the character and what they are saying as possible so that if you fluff a line you can bs your way through. There are a lot of fun characters in AMND, so I hope your kiddo gets in on the production!
