Campaign Copy System Prompt

Design a system prompt for campaign copywriting for {{brand_name}}.

Brand guidelines: {{guidelines}}
Target audience: {{audience}}
Brand voice attributes: {{voice_attributes}}
Products/services: {{products}}
Competitors to avoid sounding like: {{competitors}}

Create a system prompt that establishes:
1. Role and expertise context
2. Brand voice parameters
3. Audience understanding
4. Approved terminology
5. Terms to avoid
6. Style preferences
7. Quality standards
8. Output formatting

Deliver:
- Complete system prompt
- User prompt templates for common tasks
- Examples of good vs. bad outputs
- Iteration guidance