I have three or four different resumes, which I modify according to which job I am going for.
One of them includes absolutely everything I've ever done - this is the one that will never be shown to anyone in full. But it keeps everything complete and up to date, and is the basis of all the others. I cut and paste from this one to design the others.
The one I like the most because it shows me in my best light is two pages, listing skills and credits under categories such as Recent Theatre Credits, Recent TV Commercials, Film Credits, Recent Radio, Skills (musical, sporting, stage combat, circus abilities, etc) , and Personal Details (height, DOB, hair colour, etc). By "recent" I mean I only list activities within the last 5 years.
But the one I use most often (because it's most often called for) is all of the above cut down to fit on only ONE page. It's often hard to narrow stuff down, but honestly, if I can't impress someone with the most important credits on a single page, they're probably going to be no more impressed by seeing the second page of extra stuff. By the time you attach your 10x8 photo, it's already become two pages and that's about as much as a director really needs.
If I know it's only theatre they're interested in, I might include more theatre credits and ignore things like Film or Radio, but usually I'm better off showing versatility as well as experience.For Film/commercial auditions, I include my theatre experience because it's more impressive than my meagre camera experience, but there's no point in overloading the resume with stuff that's not entirely relevant. If I had more film credits, they'd be the most important focus.
If you're not yet in a position to include professional experience, then by all means include school productions, classes taken, and all amateur work, as well as skills like sporting interests. (I've been offered film work because someone saw I was a scuba diver). But again, if you can keep it to one strong page that's much better than trying to include everything and spreading it thin.
These resumes are the ones I only take to theatre/film jobs. I have yet another one that includes other employment experience (swimming teaching, leading school camp expeditions, etc, as well as the theatre), which is the one I might use for an application to a school, say, to run workshops with kids. In this case, they're not interested in the specific roles I've played, it's enough to mention the companies I've worked for, like you would on any job resume.
Bang up a draft including everything you can think of, and then whittle it down to that single page. That'll be the way to sort out what your strongest attributes and experiences are, and it's a neater, more impressive way to present yourself.
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