"You'll probably figure it out," Robby reassures. ...as best as he can without telling a lie, since he can't actually promise that. But he did tell Mister LaRusso to play nice if the students seemed to get too frustrated with tradition, so it shouldn't go too badly.

Hopefully. For now, Robby takes a step back -- but bring outs an arm, as:

"Just remember: paint the fence." Cue, a specific up and down motion, hand as well bending in a particular spot as he reaches up, and then down. "--Paint the dojo."

And then for the same, going left and right.