The key requirement is for the applicant to own a controlling interest in the company, at least 51%. We must demonstrate that you are an owner of the company and, as such, able to make decisions to operate this company without obtaining someone else's consent or agreement.
Another requirement is an elaborate and convincing business plan. You must demonstrate to the officer how you intend to fund and develop your company, how you intent to hire employees and maintain their employment. You must convince them that you know your business, you are a professional, and you know exactly what you are doing.
You must show that you are not making a passive investment, but you intend to run your business personally, be involved in the operational management and develop your business further. You are the backbone of your business, the visioner, the inspiration, the manager, the operator, the architect. You are behind it all.
There are many other things to do to maximize your chances of obtaining a positive decision regarding your LMIA application. They may involve opening and registering a business in Canada, creating and / or enhancing your website, seeing how you help and / or intend to help the local communities etc.