Experienced cachers can stop reading now.
A common type of hide in trees and bushes is a small hanging container. The difficulty with this type of hide is spotting it in the surrounding branches and leaves. These sort of caches may be suspended via a thin wire or fishing line, or hanging from a ring slipped over a thin branch.
The cache container you re looking for here is a camoed bison similar to the one in the background image. Do not remove the attachment and bison lid from the tree, just unscrew the base.
The usual hint for this type of hide is a variation on the cache name.
The gum tree on which it is hanging should be obvious when you near GZ, so it's just a matter of systematically checking - but there is a different tree intertwined with the gum, which ups the difficulty - however the provided hint, if you are still having trouble (or are desperate for the First2Find) tells you exactly how the cache has been placed. So now you know what you're looking for, and where it is, go get it!
As it's a micro you will need to bring your own pen / pencil - if you don't sign the log you can't claim the find (no "I forgot" or "my geodog ate it" excuses accepted). And remember to replace the log in the lid of the bison, so it is easy to remove for for the next cacher.
You can get here via public transport - busses 545 and 513 - and there are toilets and shops nearby, including a new cafe. And of course the water play park for the geokids during the warmer months. Speaking of Geokids, if you have any with you keep a close eye on them at GZ as it is very close to a watercourse.