Dear Fazinaz.
I have been accepted by the TRA too, as a hairdresser, but my agent had done it for me, its been 3 years since but I can guide you how he had done.
First of all I had taken about 75 pictures of me at my work place performing various jobs as a hairdresser, if you have got the form they might have told you to provide pictures of what ever u are doing at work. for example, doing a client's pedicure, manicure, cutting hair etc.
I remember I had to write a few paragraphs on why I wish to migrate to Australia.
and yes my agent gave me a few forms to be signed from the place where I got my training, indecating the credit hours I had worked on.
I hope this will will help, oh yes I was told to make a bank draft in the favour of TRA too.
I did not yet move or took the next step due to some unavoidable matters her in Pakistan. but wish you best of Luck . I am still in Karachi.
Please free free to ask any thing you want to know,