READY FOR IT,
Don’t worry about the PPRuNe spelling Nazis. I can’t spell or write for **** and it has not hurt me. Unless it’s changed all you have to do is write one A4 page essay on why you want to join the RAAF. Just practice that one page until you know how to spell all the words and where the punctuation goes.
Easy as!
You won’t have to write much more than an email for the first 6 years anyway. (yes I know writing skills at OTS, but that's all about formatting rather than what is actually written)
Being able to spell has nothing to do with being able to fly!