Cool stuff emerging here - we have after school places where kids go get help with homework etc by me -

Start one of those with a few other chess buddies - help kids with the HW, teach some chess, have matches on Fridays with the winner getting some kind of prize.

Track the kids progress in school too - show the parents that the grades are getting better.  If one day Johnny or Mary does not want to play chess, let them read a book or work on school work.  The deal is they are off the streets with you getting some quality time in chess or homework or other like minded kids who want to be smarter with parents who care enough to send them to you.

You could have hourly rates, weekly rates etc. 

link

When I clicked your "link", It says that it does not link !?

Naturally, it should be equivalent to services rendered. As an amateur player, I would place this value on the lower end of the spectrum, at what we call in the states an 'entry level' position. In the future, as you are still youthful, your skills will increase in accordance to your effort. As this happens, your pay grade should also increase. If you are lucky enough to hit a nationally recognized Mastard standard, then you would be of 'professional' status, and would command an income equivalent to that level. One thing I would look for in chess is to develop your own unique approach to teaching. What dynamic way can you breathe life into your lessons? How you teach is just as important as what you are teaching.

I think your question is coming from your fare and inquizitive mind.  I've had much experince in this area as a coach/instructor and their are two very important concepts to consider.  1st how much  passion will you be bring to the table and what do you think you would be comfortable with salary wise!  Do not sell yourself short, but remember that, "you should enjoy the journey"!