I always send a tell to people who have , what I think, are really good costumes/concepts. I also send a tell if they have a creative bio. If there are too many effects blocking so you can't see their costume, turn off Particles for a bit.
/noparticles 1
/noparticles 0
/macro "PAR" ++noparticles (click on once to turn them off, click again to turn on again.)