I don't like the green highlights on the eves .

One option may be to do the gutters in the green too , to hope it balances out , but not my preference .

I'd do the battens and the gutters in a charoal , so you then have the darker red/maroon tones of the roof tiles , the orangey red bricks , the charcoal , and a few white highlights .

An update thats reasonably quick and cheap , that ties it in together .

A couple of ideas for the future would be doing the fence posts in charcoal too , and the other thing I'd look at is adding fake shutters in white , on that smaller room that jutts out the front -- I like it , but it looks a bit lacking IMO , whereas white shutters would add IMO , and reference the white window frames .

Remove the green colour from gables.
Remove the window trims from your windows. They should just peel off, then a bit of methylated spirits on the window to remove the line that is left.
Remove the front shrub and replant somewhere else.
Yes, lots of landscaping with Australian natives.
You have so much space, so are large welcoming pergola would look wonderful. Maybe in the charcoal colour that Pottsy mentioned.

Paint out the green and burgundy with a taupe a few shades darker than your cream. It will show off the subtle detail while harmoning with the brick.

1. Get rid of that overgrown bush in front of the door and replace it with something no taller than 2 meters.

2. I would extend the garden bed by the front door out into the front yard and give it an organic curve to draw the eye to the entrance and frame the lawn. A large flat expanse of lawn always looks boring and barren. You need some plantings to frame it and help it stay lush in appearance. Like this....

3. You need some specimen trees in the front yard to break up the monotony and it will also make your yard appear larger by creating visual interest. For my money I would choose a native frangipani for the tree. They grow small and compact and produce the most wonderful scent every spring. They are evergreen and look beautiful.

For a medium sized bush to frame your lawn I would choose the waratah, especially if you have sandy soil as they love it and require little watering. They will also like the shade of a tree from afternoon sun. As long as they get morning sun they thrive.

For an airy sweeping effect near entrances and doors and to frame driveways ornamental grasses are great. I like gaura for dry zones. Even though it's not a native it's stunning and moves about delicately in a light breeze creating an airy effect.

I would also put up a screen or another large planting on the other side of the house to disguise the water tank from street view.

I’d start by painting out the green with the existing cream and then reevaluate. I think that simple change and quality landscaping would make the world of difference.

Is there a front door? I can't see one and not having a clearly defined entranceis really the problem. Plus the green etc.