BTC formed a rather vague asymmetrical triangle last night, which sometimes identifies the mid point of a large market move. If true, a 100% fib extension will take us to approx. 40-41k, with the potential to hit 38k. Do not FOMO into a short with the expectation that we will have a violent move like yesterday, as it is more likely to wind down to those levels more gently. As such, wait for a pullback to the 46-47k levels with stops at or above 47.5k.
If you miss the short it is okay, we're still in a bull-run anyway!
We should start to prepare for support at or around 41k, where we can load up with altcoins and look for a long entry into BTC for the push higher.