Start with vocal massage, jaw massage, yawning motion.

Make weird faces while singing. It's ok.

It’s not about perfect pitch, tone, etc.

This isn’t about performance.

Let's explore all the vowel sounds:

AAA

EEE

III

OOO

UUU

Toning/scaling up and down the spine.

Play with different volumes, whisper, go louder.

Start low, and then go high with each vowel sound.

Now combine that by closing the eyes, and seeing the sound travel from the base of your spine, up to your throat.

Play with:

HOHOHO

HUHUHU

HIHIHI

HEHEHE

HAHAHAHAHAHAHAHAHA

:)