It’s good to read the good news here, I’ve been waiting for a long time.
I passed Medical check Mar2020 and still wait until now, hope see good news soon.
I will give you some ideas based on my knowledge.
1. Sorry I don’t know but I think it’s ok if you have the proof that you do your business.
2. Contracts on mails => ok
2. You don’t need to have education in photography, you can get the point for education of any subjects.
I think the percent of process just base on the time we submit the document, because I submit around December last year, until end of March it's 21%, but I was confirmed to pass medical exam and be waiting for final decision.
I just passed medical checking in the end of March and I’m waiting for visa. But I think because Canada is closing the border now, so we have to wait a little bit until it’s opened.