Well I usuall spen about a week and basical live as my character almost. I did a production of Bang Bang ur dead in High school and lived out like Josh would have for a week. it drove some friends crazy. I did the same for Eugine in Grease.
The hardest charater work I dod was for the Wizard of Oz thou, I couldnt get Uncle Henry or the Gate keeper down. So my director and I actually spen time working on what she wanted and that helped
however when I did how to eat like a child and free to be u and me I just wrote out the stuff cause I had a week to put the show together.
When I stage managed stuff, I had some of my actors do character exercises(ei how they would walk sleep do everyday activities) and for a version of Peter Rabit I had them actually study animals for a few days
I feel it just depends on how u like ot do it. And really from my experience is if u need help with a character just ask ur directoer, cause they useually have some way that they wanted it to look before they casted u
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