The play is on top of me all the time, and I am constantly thinking about it. Even when I leave the theatre, I'll mumble the lines to myself or think about the way the character walks or holds himself.
The process of creation goes on all the time. When I get through, I feel I know what the character will do in every situation. But the building up of the part is not mechanical or deliberate. It grows out of the text.
I do not use any set methods, not even The Method. The character after all is in the lines.