pitch fork help.

Hello,

Trying to learn how use pitch fork. I have few questions

1. how do you find pivots for drawing this tool? ie to say how do u deem a low or high of a wave as pivot? what are the conditions you look for ?

2. which time frames do u suggest this tool works ? (by your experience.)

I attached my own drawing of fork, not sure if its correct . Hoping to get feedback and inputs for my questions.

Thanks in advance.

http://www.forexfactory.com/showthread.php?t=9913

this way