When you aren't / aren't working with a designer, the secret is to "draw inspiration" (copy) from landing pages that you like, and add/edit in a bit of your own

When you aren't / aren't working with a designer, the secret is to "draw inspiration" (copy) from landing pages that you like, and add/edit in a bit of your own flair (and of course your own copy). No need to entirely reinvent the wheel. Just make sure you don't steal bits that fall under copyright