I've been into photography for a while and have recently set up a website with Smugmug to store/backup/display some of my photos. But I'm still not sure when is it ok to make profit from my images? (not that mine are that good, but in theory). And am I required to set up an ABN before I sell?

Also, if I turned up to say No limits, Trakdayz, or any of the other sessions held at Barbagallo, (or even some of the Rally's down south) do I have the right to sell the images (to the owners of the cars/bikes/whatever)?

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Ryan