Looking a bit lonely by itself here, but there will be more shortly.
You’re spanning two octaves, so start this with the sort of breathing that has the energy and commitment of an athlete.
It’s in the flute-friendly key of D, but that means you have C# (which can be very sharp, depending on your flute). Check intonation if in doubt. Maybe download an app that measure what’s coming out. However, do check that you’ve gone through all the procedures to make sure that the flute is in tune with itself otherwise all measurements will be pointless. Always calibrate first as you’re gradually building up your intonation awareness.
