With a passport from the UK, Ireland, Canada, USA or New Zealand you automatically add 5 points to your partner’s Australian visa application. If you completed the Diesel Motor Mechanic skills assessment for Australia (and are under 45 years of age) this would add 10 points.
Not only do you get extra points for an Australian skilled visa you will arrive in Australia with your Australian Certificate III as a Diesel Motor Mechanic. This is huge as employers want you to hold the necessary qualification so they can insure you to work as Australian diesel mechanic employers need to follow strict health and safety requirements.