Shrinking spells?

PERFECT! I'll get started right away! Thanks! Would i be aware of my surroundings if I Astral projected into a insect, like housefly or worm?

Beware the excessive capitalization.

But yes, supposedly people have decided to perceive themselves as all sorts of things while engaging in astral travel.

Could I die if I Astral project into an insect and get killed or eaten?

The worst possibility while projecting is snapping back to consciousness. That is, you'd be disturbed back to a waking state in stead of your awareness being elsewhere. You might be momentarily disoriented, like being woken up from a deep sleep and an intense dream, but that's it.