Can I support myself and my son by teaching ESL online?

I have been teaching English as a Second Language for about 20 years now (I have a Masters, and am licensed to teach K-12), but I'm getting tired of working full-time in the schools. I would love to work from home, but can't figure out how to get started teaching online, or even if it would be possible to support us by this method. Does anyone have any experience and/or helpful advice that could either get me started or steer me away from it? Thanks!