Trill fingerings ...so many choices! There are two trills that are notoriously difficult on piccolo: Third octave  E-F#, and third octave F-G. The most common flute fingerings really don't work well on the piccolo, so give these a try. For the E-F#: Try 1 thumb 3/1234, moving RH 1 and 2. The F# is nice and clear. For F-G, try fingering High F# but add the RH 1st finger, which is the finger you trill. Both of these fingerings work well for long sustained trills. Happy Trilling! 

Breathing is one of the most natural activities we do, all day every day. However, put a flute or piccolo in front of us and that activity seems to become much more difficult! Consider the ease of your first breath in any piece of music: it is relaxed, natural, unhurried and plentiful. Try and make sure to maintain this same sense of ease and poise mid phrase. Now, you may need to breathe FASTER mid phrase, but the process is the same.. think meal vs. snack. Snacks are never meant to fill you up like a meal, but smaller relaxed breaths should be effective. Make sure the throat is not tight (otherwise you might hear a very noisy breath indeed). For piccolo, we need to make sure to remember that the air pressure must be greater than that used on the flute, and be careful not to overpower the piccolo with the same volume, or amount of air, as used on the flute.