There are probably things that are already in play - or things that you don't have control over. Collect that info and write it down.

It's kinda non negotiable, right? Let it lead the way -

The content has to "fit" somewhere... (it's just reality)

Here's the loose "keep it simple" thought process about being a super genius creative unicorn (or just making mindful choices)

This first one might be too basic... but what it comes down to is being aware of counters and aperture. Then - the contrast between chunks of type.

Slot those chunks into their spots! They'll only fit so many places...

You can do these first if you want. It depends on the project... but - for web, we recommend getting the content together first! Maybe a moldboard to start things out / pre fonts. The better you get the more loose you can keep it. Try and stick to the structure until you grow out of it.