When it comes to an ema correction, there will probably have a larger time frame trend and a smaller time frame trend that conflict with each other. Most of the time, we respect larger time frames more so that I always say "an 8/21 ema correction won't change the original trend".
It'll be even better to have signals like inside bars when ema correction finishes; just like this USDJPY today. If it's able to break to the downside, it's a no-brainer short with very little risk! On the other hand, if it's able to break to the upside, a smaller time frame uptrend will also show nice continuity!
Still it's a much better short than long for me though.