One page cheat-sheet for killer landing pages

Separate landing pages for separate audiences
One call-to-action, repeated
Keep your page simple, spacious, clean, easy to scan
Cut half of your copy, refine the other half 2 times
Make it clear who the product is for > "Email marketing for Bloggers"
Better copy > Find themes in your customer reviews
Positive > Use language on your page
Negative > Address concerns
No reviews? Analyze competitor reviews (G2)
Use Hemingway App for stronger copy
Add urgency if possible
Use product screenshots or gifs instead of illustrations
Illustrations of product OK if complex feature
Split test large design changes first
Use multi-step forms instead of large forms
Even best practices may be wrong, test everything
Run through Pagespeed see if anything is broken
Optimize all images, scripts
Cater to the right audience awareness level (don't explain the obvious benefits of your product to people who already know them and use similar products)
Add testimonials, ratings, social proof
Make it easy to act > free trials