Theatre resumes are VERY different from a typical work resume, I keep one of each. If you are auditioning for Equity then do some research on-line and seperate your experience into related categories, here are some ideas:
Stage, Film, Television, Special Skills
College, Community, Regional, National, Special Skills
Performance, Directing, Choreography, Stage Crew, Special Skills
If you are auditioning for a character then you do not need a resume so don't worry about it.