Keep in mind the employer's perspective
Employers use resumes to decide who gets an interview. Make certain that your objective states what kind of job you're looking for and what you have to offer the employer. The experiences you include should help prove your value to the employer. You don't need to include all the jobs you've ever had, but definitely include the ones that support your objective.
Emphasize what you've learned
Although some of your jobs may not seem related to your search, remember that the employer is interested in what you learned from the job. For example, although delivering pizzas may not be related to your career, the fact that you've learned how to manage time, how to deal with customers, and how to account for money will be important skills to a potential employer.
Include unpaid experiences
Volunteer positions, internships, or class projects often lead to the acquisition of valuable new knowledge and skills. For example, if you were active in a community center and performed all the duties of a business manager, you certainly acquired new skills in the process. Highlight your work by putting it under "Experience" rather than "Extracurricular Activities."
Use action verbs and keywords to communicate your skills
Use phrases instead of sentences, beginning each with an action verb and include keywords related to your objective.
For example say, "Maintained records in database by adding, deleting, and/or changing information" rather than "Responsible for keeping records."
Use the present tense for your current job and past tense for previous jobs
Provide specific examples and quantify accomplishments
Examples and statistics strengthen your resume by telling the employer that you are aware of the results of tasks and that you care about the big picture. By including important details, your experience is transformed into a revealing and substantive resume item.
Example: "Handled cash receipts of approximately $500 per shift" has more impact than "Waited on tables." "Increased attendence 25% over a two-year period" rather than "Increased attendance."
Add your name to file name for your resume when making it available to employers
Don't just call it Resume. Employers can get tens and even hundreds of resumes forwarded to them. Employers may need to change the file name and the e-mail subject to make it easy to find you.
A resume is an example of the quality of work you do. Don't make a bad impression by making spelling and grammatical mistakes. Don't rely solely on spelling checkers. Some words may be spelled correctly, but bee the wrong word for the sentence--as you can tell from this sentence.