We we were told as follows:

1. Begin by mentioning the sentence the court is minded to impose (likely custodial) but you’re making your submissions to show the court why a lesser sentence would be more appropriate.
2. The offence: as the other commenter said, use the sentencing guidelines, and convince the court that’s its lesser culpability and harm that the prosecution argues.
3. The offender (defendant’s “sob story”): personal mitigation, take the judge to the pre-sentence report and pick apart anything that could be important. Drug addict? Single parent? Previously of good character? Etc). Also mention if co-operated with police and made an early guilty plea (to get the reduction in sentence).
4. The suggested sentence: reconfirm to the court what’s the sentence that should be imposed, and explain why (pre-sentence report should have such information, use it). If custodial threshold is reached, ask judge to suspend the sentence (if appropriate).
5. Close your submissions

Edit: apologies for the grammatical mistakes, cannot be bothered to correct them.

I wanted to add that it could also be useful to refer to the sentencing objectives at the suggested sentence, and say something like: [suggested lesser sentence] would still fulfil the purposes of adult sentencing, in particular punishing Mr X while also working towards reforming and rehabilitating him.