I have to agree with a lot of what hddscan said, however, I'm less pessimistic. I do think what you are trying is possible, but it requires a tremendous amount of hard work and luck. The biggest problem is to find someone who would actually hire you. You don't have a certificate, no teaching experience (right?) and you only speak basic Russian, which means that your potential student should already have a rather good command of English in order for the two of you to communicate. If this is really want you want to do, you are prepared for a rather low salary (at least in the beginning) and a lot of paperwork (Russia is a bureaucrat's paradise), go for it, but if I were you, I would at least get a certificate, so that you have at least something to show.