I was also initially reading without replying to a post, but having read questions from a whole lot of people here and the incredibly useful answers provided by respondents, not the least of which come from Omofar, I thought it wise to respond to this and to give general advice to whoever is interested.
Specifically addressing your immediately above questions, I would say it is a grave error not to include your letter of employment, letter approving your study leave and a letter of reference from your employer or supervisor or HR confirming your position, that you work with the organization and that you have requested a study leave to study in Canada, stating that you have indicated that you would return to your job after studies. This letter must be on company letterhead with address, email address and company phone numbers. This letter of reference is indispensable to your success, whether ot not your father is the one sponsoring your studies, these letters must be there.
If you applied online, or you have linked your paper application to an online account, please upload these documents I mentioned to update your application. I speak from experience, having gone through this process 6 years ago and living in Canada since then.