The other pattern to look for is when a coin has a long and steady climb and then suddenly shoots straight up. That massive green candle is almost always the end of the bull run. When Bitcoin or an alt coin shoot straight up like a rocket, ride it for a day or so and then get the hell out.
Reversals to the downside happen faster, while uptrends tend to move slower before taking off like a rocket. Don’t get caught in that downtrend. Just get the hell out when a coin starts to slow in its upwards channel.