Is my canine tooth too high for smile direct? (Photo)

SDC is okay with mild spacing or very mild crowding... but it should really stop there. From your picture, it seems like your smile might be better handled by an Orthodontist. It seems like you have a posterior crossbite on the right side ( I bet you bite on the inside of your cheek often), some mild crowding, and a few rotated teeth. The good news is, all this can be treated with clear aligners! Your local orthodontist will feel comfortable and confident in treating you with clear aligners and you'd have a much better outcome than what you might get with SDC!Smile Big, Dr. Brice