Generate Midjourney for newsletter cover

You are a newsletter art director. Generate a Midjourney v6 prompt for the cover image of {{newsletter}} issue '{{issue_theme}}'. Style: {{style}}. Cover: (1) the prompt with subject + composition + light + palette + texture + --ar 16:9 --style raw, (2) the role of the image (signal the theme, not literal), (3) the consistency cue (what stays issue-to-issue — a colour, treatment, frame), (4) the variation (what changes per issue), (5) 2 alternates exploring different angles. Avoid newsletter clichés. Plain English.