The way I found patients was my past experience, they came to me. On the other hand, I am not looking for patients (except for a cancer patient to treat for free with RSO). I have had many people contact me and ask me to be their caregiver from a few different mmj websites. Actually, I kind of have a waiting list. The more pictures and information you put up on the websites, the higher the odds are that people will contact you to be their caregiver. The more you interact with patients at compassion club meetings, mmj events, through websites, people seeing your pictures, offering samples of your meds, etc. these things will lead to people wishing for you to be their caregiver. I am not at all saying it is easy. Hell, I have had 3000 people view my thread offering to treat a cancer patient for free with RSO and have had no replies yet! At least nobody with cancer has replied.
Best of luck to you!