BTC goes up, alts go down for a while.. It is the same trading as always. Mycelium won't change anything obviously more time is needed, like the last few times we have hit 20k, then back up again, I'll wait for 25-27k and maybe then sell a few but it is easy to profit from.
WAVES value will go up extremely fast at some point over the next few months/years, it takes time..
I don't think alts are actually crashing overall though, in terms of USD. While alts did crash from August through October 2017, alts overall are no longer downtrending when bitcoin pumps. Look at the charts here
www.altindex.io. When bitcoin pumped in the beginning of the New Year, alts pumped massively (peaking briefly on Jan 5th). When Bitcoin recovered from Jan 12th to 21st, alts recovered as well. Even in the past 3 days with bitcoin pumping, the alts continue to climb.
The chart I'm referencing at
www.altindex.io is the T&C 20 Index which is a market-cap index that includes approximately 20 highly traded medium to large altcoins (including Waves). Waves does seem to be struggling right now in terms of price; but, I'd say we are in the middle of an altcoin bull market overall. I think waves will gets its due attention within the next month or two.