Clear Titles: Use searchable product names; invoice editor searches by title Separate Descriptions: Marketing content in main area, invoice-specific details in meta box Accurate Pricing: Verify prices before publishing; affects all invoices and carts Tax Compliance: Apply all applicable tax rates; incomplete taxes cause accounting errors Company Consistency: Ensure product company matches billing company for invoices Digital File Backups: Keep backup copies of digital products; external storage is primary Featured Images: Use high-quality images; improves shopping cart and website appearance Categories: Organize even small product catalogs for scalability and website UX Test Before Selling: Create test invoice or add to test cart before promoting digital products Regular Reviews: Audit