A few other little things I've just thought of

If you are in rotating paceline (where everyone takes a turn at the front) don't speed up when its your turn at the front. Take note of the speed the paceline is moving at before you get up there and try to hold it steady. For you own sake don't slow down too much as you fall back or you'll have a hard time reintegrating at the back.

Any sort of sketchy riding - wobbling about, sudden lateral moves, sudden braking will make people want to avoid being behind you.

Being in Australia you probably don't have to deal with this right now, but if you intend to ride when it is the wet season out get fenders and put on a "buddy flap" - which is a homemade extension for your fender that hangs off of the back and acts as a mud flap. Your buddy flap can be as simple as some duct tape or as fancy as you want to get. Many people use a water bottle cut in half and attatched with zip ties. This protects the rider on your rear wheel from getting all of the spray and mud and road gunk all over their front and face. Not having these things will often get you banished to the back of the paceline for the day. I can post a picture of one if you'd like.