Starting with your living room, for some Kiwis we like to position our furniture around the TV, some like to angle it towards the outdoors, and in winter maybe re-arrange it towards the fireplace.
This is a good concept you can choose to have a summer and a winter setting.
For some its in the too hard pile, we purchase our furniture and stays in situ for many years to come. This however does not need to be the case. Mix it up, and keep having fun with your pieces. If you can change them round.
Always take your time, measure it out, put masking tape on your floor as templates and really work with space, symmetry and proportions.
If its a huge living room, as we start to live in more and more open spaces it might be you need a rug to define your space, you can position your sofa legs on the rug or it can be spaced slightly back, again maybe borrow this on apro if you can.
Try to avoid having large backs of sofas for when you enter a room as it is not so welcoming and really does cut off the space, put your sofa on the longest solid, biggest wall you have.
Try not to place it in-front of a large window floor to ceiling or ranch sliders.
Not only will your sofa fade badly it blocks the light and will block the lovely outlook you have onto your garden. Instead position your chairs in-front of windows, with a small side table to break it up.
Its very popular at the moment to have a few side tables and coffee tables layer them up as apposed to one large coffee table. Mix up your textures and materials.
Lastly don't forget scatter cushions to bring in some colour.