Getting your name out there
yes the red cross one is good
Wow you are acting like the kids' parents I say that maybe raise it to $25 or $30 not just $20
Raise your hourly rate
With my 6-year-old cousin that I babysit when he acts up, I make him sit on the stairs and I let his other brothers play a game so he can see that if you act up there is a punishment that isn't that bad.
I would say $30-$35 would be a good hourly rate for special needs children.