Spirit candles are my kinda approach for smoothing the regular candles and I use them always. I coded them in Meta Trader years ago and was a nightmare. Thanks to Tradingview's tools it was a very easy task to be honest. How to use them can not be explained here. But one way is basicly look the tails and wicks. They give an idea if market is trending if uniformly up or down. Fluctuations happen at the trend changes with mixed tails and wicks. Monitoring the price action market will deciede the way and the wick heavy pattern turns to tail or vice versa.
Use inheritence value to fine tune for different time frames or smoothing the price action more...