My wife and I want to visit my wife's brother in Canada. I am an Imam in a mosque that our family owns and I teach Quran and religious courses. I also deliver religious sermons, which are posted on YouTube. I have good travel history (6-7countries) in last 10 years. I also have a valid Australian visa. My question is what do I put under work history as my main income is through religious work and I get paid in cash. and what documents do I show for the same?