190 with 55 points - how to proceed - please help

hi

I am a software engineer and have 55 points. so do not qualify for skilled migration. so thought of applying for 190. So I need to apply for NSW or victoria. I have already done my iels R 7, w 7, s 8, L 8.5 . I think i need to get ACS assesment first. Do I need to get my ACS assesment done first. Can you please advice how to proceed. Thanks in advance.