The first candle is the pattern is a bearish candle that has a long body and relatively short lower wick. With that, the second candle that forms must be a bullish candle that closes positive but not above the mid point of the previous candle. The second candle also can have a lower wick as well.
With that being said, analysis of this pattern can work in a couple of ways. It is thought of as a signal that the market will continue the bearish pattern because the second candle was unable to push past the first candle, let alone the mid point. However, some interpretations could be that bulls are in the market because of the candle itself. A great place to look in helping confirmation is the volume levels. Regardless, this pattern should alert you to a potential shift in the market. As with many candlestick patterns, they are not certain. Incorporating this into your current trading setup my enhance your abilities, but run tests before implementing anything new.