On the right is an excellent example of what a simple, clean, and concise resume should look like. Here are some guidelines:
Font: Arial, Tahoma, Calibri
Font Size: 11pt except the name in the header which is size 13.
A summary is optional. If you have one, make sure it is concise and any specific certification you may have is highlighted.
Skills and Expertise: Source through the job description and ensure the skills which are listed that apply to your experience are displayed. Of course, if other skills apply then put them here
Uniformity. You must have some order you follow when it comes to displaying your work experience. For this resume:
Company | Location
Position Time Worked