Avoid being vague If you have references include them. Dont say available upon request. If you have gaps in employment explain them clearly. They will probably come up in the interview anyways. Being prepared in advance by giving complete information in your resume is better than being caught off guard in the interview or worse skipped over all together.
Tailor the resume to the job description Make sure that every time you apply for a job that you adjust your resume to the particular place you are applying. Read through the job description and make notes of any areas being focused on. Make sure to add information to your resume that highlights your abilities in those areas and makes you more attractive for the particular position you are applying for.
A clean clear and attractive template for a resume is appealing showcases the important sections of the resume in a proper way and catches the attention of the readers in a way that they will read all that you have in it rather than reading just a few lines. The more time you gain from a recruiters attention the more are your chances of getting an interview call.
Add in a list of skills Your resume is no place for modesty. Highlight your skills especially if they are specific to the job youre applying for and list where you gained experience with that skill set. Instead of being general give concrete details and highlights. For example list your experience with Microsoft Office or even a particular piece of software over computer skills. Make sure to include plenty of competency statements.
An attractive resume template/outline makes it more powerful. Just as dressing smartly helps a candidate in an interview good formatting does the same for a resume. Looks do matter at all places in the real world and on paper. When you present yourself well you get noticed. Similarly when you present a good resume it will be noticed; otherwise it would be very easily find a bin to rest in.