Answer:
A strong resume must be short and complete.
Step-by-step explanation:
Focus on your work experience. This is what really makes the employers read your resume longer. They would take a look at how long did you worked for a company and the nature of work you have handled to see the relation to the current opening / hiring position that they have. As much as possible, arrange your working experiences from latest to the oldest.
Instead of enumerating your skills, list down your accomplishments that you have achieved. This would help your potential employers to look at your strengths.
Be honest. As long as you have put in skills and work experiences which you have truly acquired, then you won't have to worry. Mostly, employers, would ask you things that you have put in to your resume. They would ask more information about it then you could just answer it from the heart.