Fly in an appropriate/designated area and always consider safety protocols and pre-flight testing. It's important for your safety, public safety and critical for the future of our hobby more than you may know. If you want to use our products for commercial use, please check/register with Transport Canada and obey all laws at all time. MACC membership is a good bases to have, obey the 400 feet max altitude, do not fly above people, houses, cars, pets,... common sense around roads and of course stay away of "real" air traffic and airports area.
For commercial use you need an SFOC (Special Flight Operation Certificate) to legally operate.
Section 602.41 of the CARs states, no person shall operate an unmanned air vehicle in flight except in accordance with a Special Flight Operation Certificate (SFOC). Section 623.65 outlines information that should be submitted when making an application for a SFOC. Be sure to make your request as early as possible and provide as much information as possible. You must be able to demonstrate the predictability and reliability of the unmanned air vehicle, essentially that it has the ability to perform in the desired environment. The requirement for a SFOC is intended to ensure the safety of the public and protection of other users of the airspace during the operation of the unmanned air vehicle.
You need to contact Transport Canada for the latest details but in a nut shell you need to fill out a document explaining all your operation , craft, safety, checklists, procedures, insurance, skills, ... (this can take up to a month to obtain if it's all done correctly) Then once they grant you the certificate you still need them to clear / approve your flight plan every times you have a job to do (may require 2 weeks to do it). Once you get more flights done and they start to know you they MIGHT AT THEIR DISCRETION grant you a blanket flight statement allowing you to fly when you want / where you want (but still not breaking the law) They will know already that they can have confidence in you not flying in potential dangerous situation if they issue a blanket statement and from time to time they may ask for flight logs and recorded videos.
Not complying to the above may result in a fine to pay and equipment seizure. Plus these rules are really there to make sure you have a good judgment operation your craft and that you will never expose the general public to the risks associated to operating these type of crafts.