There is a professional listing section on this site. Start there. Most of the people reading this section are enthusiasts who just like commenting on other people's posts.
Hi Kiran, Click on "Find Professionals," on houzz.com.au and you can search for a designer or decorator near you. I am in Sydney, so probably am not much help to you, but I know there are good designers in your area.
Austere Hamlet
Mollie Kohn Interiors
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