You need proof of the relationship and of the relative's status in Canada. To see if your skills are needed in Canada, check the General Occupations List . If your occupation is not on the list, you will not qualify, unless you have arranged employment . If an occupation is not on the list, it usually means that there are enough Canadians qualified in that occupation to meet the demands of the labour market. It is important to remember that even if your occupation is on the list, that is no guarantee of employment in Canada.
Labour market needs can change.
You may not meet Canadian standards for your occupation and may need upgrading. Some professions such as engineers require applicants to meet standards set by a professional body or association, which may be different in each province. Check to see if this applies to your profession and which association you should contact. For example, an engineer should contact the Canadian Council for Professional Engineers for an evaluation of qualifications. You may be asked to attend an interview, where a visa officer will evaluate your qualifications, language ability, personal suitability and so on.