How to design beautiful landscape at backyard?

Hi Guys, I am just wondering about designing a landscape at backyard. I have checked out too many DIY tutorial but I believe I won't get much time to decorate it myself. So I am looking forward to get the help from some landscape designer.

I am living in Sunshine Coast, Australia and someone has suggested me Earth Creation Landscapes Company for getting a hassle free solution. Kindly suggest me if you all ever had any experience with the landscaping company.

Thanks Abbey Daws