Don't exaggerate or misrepresent yourself. On the other hand, don't sell yourself short either. Make sure you have listed all the correct personal data , including your address and a telephone number where you can be reached during the day. Have an employment counsellor or teacher help you identify your skills and help with the format. Have at least three references .
References can be personal, but academic or work-related ones are preferred.
Make sure there are no spelling, grammar or typing errors. Bad proofreading gives them an easy out. Do update it regularly and retain past versions for future reference.