This arrangement can help you develop a lot of skills.
The flutter tongue passages are useful for developing support and you can become aware of tension in the throat. The wind tones are useful for practising the movement we make while playing a decrescendo. Tone bending is useful for developing aural skills and it will make you more aware of the right flute angle. Key clicks with sound can help you get a better co-ordination between the tongue and the fingers and pizzicato also helps you develop co-ordination of the tongue and abdomen.