Use standard fib numbers: 3 5 8 13 21 34 etc
key is starting from the right place. Can do long-term and short-term counts. When long and short term match - bingo (hopefully 😀 ).
Starting from an obvious high or low is a good idea. There were 8 days down from the last high, so, if the trend is down there would likely be 5 up to make 13 (the next number in the sequence). There were actually 3 up to almost make a high, and as today is the 5th day, unless the market tanks down (very unlikely IMO), the next major high is likely to be 13 days up from the low.