Check this out. There are a lot of info's here. Every applicant has his own story, so it's really important to stick to the lead statement of NOC 1122 duties and combine it with your own experience.
http://www.workingincanada.gc.ca/report-eng.do?area=25349&lang=en&noc=1122&province=48&keyword=1122&action=final&display=complete