Refine an existing PowerPoint deck for consistency and speaker notes

I have an existing PowerPoint deck that is functional but messy. I want Copilot to bring it to a presentable standard without rebuilding from scratch.

In PowerPoint, open the existing deck. Click Copilot in the ribbon.

Deck purpose: {{purpose}}
Audience: {{audience}}
The fixes I most need (layout / spacing / fonts / colour / speaker notes / cull): {{fixes}}
Brand standard to align to (colours + fonts): {{brand_standard}}
Slides that are sacred (do not touch content): {{sacred}}
Slides that are likely dead weight (cut or merge): {{deadweight}}
Length target: {{length_target}}

Ask Copilot:

Audit every slide in this deck. Produce:

1. **Slide-by-slide diagnosis** - for each slide: what is wrong (if anything), severity (small / medium / big), recommended fix in one line.
2. **The 5 slides to fix first** - these will get the most uplift for the least effort.
3. **Apply automatic fixes** on a copy of the deck:
 - Align all titles, body, and footers to {{brand_standard}}.
 - Standardise font sizes and line spacing.
 - Replace any default-template colour with the brand palette.
4. **Cull recommendations** - for {{deadweight}}: cut, merge, or keep with reason.
5. **Speaker notes** - write 3 to 4 sentences of spoken-style notes on every slide that does not already have them.

Leave {{sacred}} content untouched. After the audit, tell me whether the deck is now within {{length_target}} or if I still need to cut. AU English.