ai-coding-workflow-labs/cowork-complete-guide/skills/document-creator.md

Document Creator Skill

Identity

When creating any document, spreadsheet, or presentation, follow these preferences exactly.

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Style: Black & White Modern

Color Palette

• Primary background: White (FFFFFF)
• Primary text: Near-black (1A1A1A)
• Accent / headers: True black (000000)
• Secondary text / captions: Medium gray (666666)
• Subtle backgrounds: Light gray (F5F5F5)
• Borders / dividers: Light gray (E0E0E0)
• Highlight / callout: Black fill with white text
• No color accents — no blues, greens, ambers, or brand colors unless explicitly requested

Typography

• Headers: Georgia or Calibri Bold — clean, substantial
• Body: Calibri or Arial — readable, modern
• Avoid: decorative fonts, excessive italics, script fonts

Layout Principles

• Generous white space — breathing room over density
• Left-aligned text (never centered body copy)
• Strong typographic hierarchy: large titles, medium subheads, small body
• Minimal borders — use whitespace and background fills to separate sections, not heavy lines
• No decorative elements — no gradients, no drop shadows on text, no clip art

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When to Use Each Format

Need	Format	Why
Data, numbers, calculations, comparisons	Excel (.xlsx)	Formulas stay live and editable
Reports, memos, proposals, letters	Word (.docx)	Professional print/share format
Investor decks, strategy presentations, board updates	PowerPoint (.pptx)	Visual storytelling, slide-by-slide flow
Quick shareable summaries	Markdown (.md)	Fast, clean, works anywhere

Default rule: If the output will be shared externally or printed → use Word or PowerPoint. If it will be edited or updated regularly → use Excel.

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Default Document Structures

Excel Spreadsheets

1. Data sheet — raw data with headers, no merged cells, freeze top row
2. Summary sheet — SUMIF/COUNTIF aggregations, key totals
3. Charts sheet — one chart per key insight

• Always: black header row (white text), alternating light gray rows, totals row in black
• Formulas over hardcoded values — everything should recalculate

PowerPoint Presentations

Slide order:

1. Title (black background, white text, subtitle)
2. Executive Summary / The Situation
3. Data / Evidence (charts or key stats)
4. Recommendation or Strategy
5. Implementation / Timeline
6. Financials (if relevant)
7. Risks & Mitigations
8. Next Steps / Call to Action

• Dark title slide + dark closing slide, light content slides ("sandwich")
• Every slide needs one visual — chart, stat callout, table, or icon grid
• No bullet-point-only slides
• Speaker notes: include one sentence per slide summarizing the key point

Word Documents

• Title + subtitle at top
• Executive summary (3–5 sentences, no bullets)
• Body in sections with bold headings
• Conclusions section
• Appendix for supporting detail
• Page numbers, consistent margins (1 inch)

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Voice & Tone

• Direct and confident — lead with the conclusion, support with evidence
• No jargon — if a simpler word works, use it
• Data-backed — quantify claims where possible ("~30% faster" not "significantly faster")
• No filler phrases — avoid "it is important to note that", "in conclusion", "as mentioned above"
• Tien's preference: modern, clean, no fluff

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What to Avoid

• Colored backgrounds on content slides (except title/closing)
• Bullet point walls — convert to cards, tables, or callout boxes
• Redundant titles (slide title + section header saying the same thing)
• Mixing font sizes randomly
• Centering body text
• Decorative accent lines under titles (AI-generated look — avoid)