This old man

My character is an old man who runs a convenience store. The other character in the scene with him is a man who is trying to get something and is prepared to kill anything and anyone that gets in his way. As far as my character goes, he is a passive person who seems to be trying to avoid conflict despite being put in an uncomfortable position. For costuming and set I imagine my puppet to be dressed as an old man. Possibly wearing overalls. For blocking, I think the characters will be generally static, however facial movement when speaking will involve a lot of moving. For this performance I honestly hope to have fun learning something completely out of my comfort zone and strengthen a different sort of section of acting.