Serbinski Accounting Firms

Thank you !
Where can I find the specific info ?

I am a freelance cinematographer who has worked on and off in Canada for years. I have a corporation that gets paid for my services. Traditionally, I have filed a T2 return and get a refund for my with holding. I was in Canada working from roughly Nov 23 2020 to July 2021on 2 separate projects . I d...