What Forms Do I Need For Income Tax If I Am An Independent Consultant In A Direct Sales Business? Canada Tax!

I work casually as an Independent Consultant in the direct sales business ( avon, toys, etc, that kind of thing). How do I claim my income on my income taxes? Is there a certain form I have to fill out with a ton of info, or can I basically say, here is my net result after all my expenses are calculated into the mix? Canadian tax info only please!