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In the overview you begin to give commentary (i.e. “at first it seems a jumbled mess…”)
I'd rather stick to describing it – what it constitutes or tells.
Worth noting a bit more about who the Walbiri are. Do you quite understand what Dreamtime means? I think it's pretty important; check this out: http://www.aboriginalart.com.au/culture/dreamtime2.html
Here also: https://www.britannica.com/topic/the-Dreaming-Australian-Aboriginal-mythology