Be sure to use accurate dates of employment -- do no inflate experience by lengthening time at any position.
Use bullet points to highlight position responsibilities instead of paragraphs. This provides an organized look and increases the chances of the content being read.
Do not list salary expectations on resume.
Do not list hobbies, unless they are directly related to the position for which you are applying.
Do not leave gaps in employment history. Fill any gaps with explanations, making sure to include volunteer work or association participation during that time period.
Try to keep your resume to 1-2 pages in length. Anything more is too time-consuming for the recruiter/hiring manager.
Have someone you know take a look. Use people you know that are in hiring positions, and see what they think of your resume. Take their constructive feedback and make changes if you feel they are warranted.
Use spell check. There is nothing worse than reviewing a resume with grammar and spelling errors. It shows a lack of attention to detail.
Use key words. Take words from the job description and use them in your resume.
Do no include a picture of yourself anywhere on your resume.
Do not list your age, marital status, # of children, religious affiliation, etc. Leave out all personal information.