Elmo has a knack for talking in third person and there is never any variation from that. As writers, we have a tendency to get stuck in first person, third person limited or third person omniscient. We get stuck in a rut and only see from that perspective. There is nothing wrong with sticking to one person or another, but choosing another perspective often sheds light on your character. For one chapter or short story, change from one person to another. Eclectic Press likes this exercise.