to apply for WA u need to have at least 7 in each band, because ur field is under professional skills. Do u have at least 7 in each band?
"Have evidence of at least competent English. This is defined as an International English Language Testing System (IELTS) result of at least six in each band. If your occupation is listed on the WASMOL under managers or professionals, you require a score of seven in each band for IELTS or a B in the Occupational English Test.*"