Résumés should be one page in length -- no more -- with one-inch margins and in a 12-point, standard font (such as Times New Roman or Helvetica).
The header of your résumé should include your name, voice type, contact information, and a miniature of your headshot. Do not include your height, weight or eye color (this information is for theater and musical theater auditions only). Your name can be in a larger font, and the style and color can be different from the rest of your résumé. This is your professional letterhead.
Include clear headings (see template in link below). Organize the information in columns, with your most recent experience first. If your past experience includes being cast as a cover (understudy), denote that clearly. Scenes programs (such as Opera Workshop) can be listed under the heading "Scenes" or "Partial Roles." Choir, opera chorus, recitals and concerts, theater, and musical theater experience is relevant performance experience that may be listed on your résumé. "Special Skills" are other current, relevant skills that make you a valuable addition to the cast: particularly, languages (example: Italian diction or Italian 102) and movement (example: 8 years of ballet). Remember that "relevant" does not specifically mean "European": proficiency in non-European languages and dance traditions are most certainly relevant, valuable experience. Skills listed must be current: if you would not be comfortable demonstrating a skill in the audition, do not list it on your résumé.