Always highlight your achievements at each position. Potential employers are not as interested in what you did as in how well you did it. Never include personal information including hobbies and interests.
Most employers are only interested in job- related details.
Employers want to be able to find relevant information quickly. Always include a cover letter that ties relevant sections of your work history to the requirements of the new position. Always highlight special skills including software capabilities, additional languages or industry-specific knowledge. Both must be error-free. Always list activities with professional associations if appropriate to your career.