Well it looks magnificent, Pete. Does it run as well as it looks? Are those the original colours? And didn't it originally have a speed control on the handlebar? (Some mowers don't, they just run at maximum speed.)
A detail: if you can get wheels or tyres for it, those bald front ones are the only weakness in its appearance I could see.
Well done. For your first lawnmower restoration project, it is a remarkable outcome, especially considering how complicated that engine is, and that it isn't a mower that existed in any numbers in Australia. I think our most experienced restorers would be proud of it.