FTO AUSTRALIA

So I found 4 rust on the back. 1 is like just on the bottom of left back suspension. I applied rustconverter yesterday. Today I am going to apply fishoil, however one of them is as big as 50 cent and it is pretty deep. There is only one layer left which is not rusted. So what do I need to get in order to fill this rusted place?
And what kind of paint/ wax etc.. do need to get after I finish the job?

These are the pictures


I haven't applied rust converter yet to this one

This is the big one

This is what happened when i applied fishoil, I actually thought it dissolves what rust converter converted.

am i the only one who cant see the pics?

Sorry just fixed it...