Your Curriculum Vitae is, in most cases, the first point of contact with your future employer. It is an outline of your educational and professional history and it should give an employer enough interesting, relevant information to get you an interview. A CV should be honest and factual. Don’t leave gaps in your history because you will be asked about these at interview.
Tailor a CV to a specific job. Read the job specification and show how you meet the criteria. Demonstrate that you have what they are asking for.
A CV should not be more than two A4 pages. Employers get numerous applications for each job and will not spend very much time on each CV, so be concise and clear in writing a CV.