Hi Lilias,

Somethings to include (and these might be obvious)
Contact details
Qualifications/certification
Relevant awards
Bullet pointed list of key skills and or attritubes with enough detail about how you've demonstrated that skill in the past (I have mine listed in groups under headings that the relevant to my profession (e.g. research skills, client skills, neogotiations skills, professional skills).
Past work experience from most recent to a few years ago, showing dates, employer, role and key duties.
Details of two referees.

I keep mine to 2-3 pages and use headings so everything is very clear.

HTH!