As shown in the example below, the Evening Star pattern appears when the market reverses from an uptrend to a downtrend. This pattern includes the following:

The first candlestick is bullish, indicating that the market is in an uptrend.
The body of the second candlestick is very small (looks like a Doji candlestick), indicating market indecision.
As it closes far below the first candlestick, the third candlestick confirms a trend reversal of the previous trend.

An Evening Star pattern is a significant bearish reversal formation observed in financial markets, particularly in candlestick charting. It typically consists of three candles: a large bullish candlestick, followed by a smaller candle with a narrow trading range (often a doji or spinning top), and finally, a large bearish candlestick. This pattern signifies a shift in market sentiment from bullish to bearish. The first candle represents strong buying pressure, followed by indecision or uncertainty indicated by the second candle, and finally, the confirmation of bearish sentiment with the third candle. Traders interpret this pattern as a signal to sell or short the asset, anticipating a potential downturn in prices. However, like any technical analysis tool, it's essential to consider other indicators and market conditions for effective decision-making.