"Patterns" are, in fact, a fiction -- there is nothing special about them -- 50day SMAs do not "bounce off" 200day SMAs, etc etc. BUT, there is also the very definite, very empirical, rudely robust idea of herd behavior, or more mathematically,
https://en.wikipedia.org/wiki/Quorum_sensing
and with this, when enough people chant the myth, their very chanting MAKES it true.
No, there is no such thing as a Cup&Saucer Pattern, whereby ANY economic phenomenon you care to name, will drive buys to buy for more or less, impel sellers to sell for less or for more.... No. BUT!! If you see some yutz prattling on about THE COMING CUP&SAUCER IN [name_your_favorite_commodity] -- well, who knows what will happen!?!
If it goes one way, they'll say, "See?? A confirming pattern!! We HAD a cup&saucer!"
and if it goes the other way, they'll say, "Oh! A cautionary tale! Glad you were tuned into this show to see it happen!"
But predictive POWER?!?!? Rarely.
1) have candlestick periods that, LIKE THE ORIGINALS 4 CENTURIES AGO, actually meant something. (E.g, "overnight" -- where a break between candles had meaning.)
2) this is different among various tradables, but look for market turns with long wicks -- it means the market couldn't hold the price to that extreme, and it turned. There can be long wicks in the middle of a trend, but when try different time periods for a single underlying, and you find one with the major turns holding big wicks -- that's a good one, with candlesticks that would bare some ROBUST OBSERVATIONS over time.
blah blah, blah-blah-blah......
(It takes about 5 minutes of gazing to tell whether a technical graph passes the Coin Flip Test of being right at least half of the time. I'd go with 80% or better, before I put money on it.)