hello fran draw channels from highs to low then anchor your center line then match up the fork. if the fork is narrow the fork will be drawn by the 2nd high and will change. Use RSI to help mark end or beginning.
i am going to post like 5-7 times on this board with charts (only this board). so they can be easily read and used.
draw up fork and down one. again use channels and manually draw in the center line till you become comfortable
here is andrews pdf. he does wide forks i do not. i want my fork to encapsulate price and price should return to the center line at least once. (andrews says 80% of the time price should be in the middle or close to it) post forks when you can and you will improve. sometimes your forks will be better then think.