| Mistake | Fix | |---------|-----| | Using Korner for body text | Reserve for headers (max 3–5 words) | | Not adjusting leading | Increase leading by 20% | | Forcing italic (nonexistent) | Use oblique transform, but avoid | | Overusing multiple weights | Stick to one weight per composition | | Ignoring exclusive alternates | Check OpenType panel for 'ss01','ss02' |