Cant make it more simpler than this :)
I am using a 4 h chart but any time frame will do.
This is really simple way to see where the possible decision zone or price is.
If one (or 2) moves above/below the R or S line but the rest refuses to follow, there is strong probability for the change in direction.
In this particular case, if ETH and or LTC wont make it above the same line as BTC, BTC will fail too and search for next support starts.