If you mean how to do it properly...
You remember where the green sections are, then once they disappear, you try to click the needle to line up with where they were. Success in this can lead to a chance of bonus rewards, either jewels or useless tin/nickel/etc.
Failing this has no effect whatsoever on the success rate itself.
If you mean how to mod the minigame, I'm not sure if there's anything out there.