First is to always assume your reader is consuming your work on a phone regardless of how you make your art.
Webtoon format?
Layouts don't really matter despite what the Tapas hint page tells you. The audience scrolls by too fast to take in your efforts to control the passage of time in your comic. Draw big and compose simply if you want to meet them on their terms.
They read like pigs at the trough so you have no choice but to shovel it in. The only excuse for a lot of small close-up panels is to avoid drawing backgrounds. The reader will scroll through your action scene at the same speed they scroll through your dialog.
You could try the extremely lame large empty space with a single word balloon if you really want to try to control the pacing but they'll just roll through that even faster.
Your composition focus in an infinite scroll should be the panels themselves. Rule of Thirds is brain dead easy to use. But in the end everything will just be stacked on each other like a pile of shipping containers because that's the format.
Be clever sparingly. They're not there for clever. They're there to scroll as they poo.
Printed page format?
Not that readers don't skim these like they do a webtoon format comic, but the physical act of needing to read side to side, and turn/ load a new page does slow things down.
As a general rule your page should lead to either a moment that will be resolved in the last panel. Or it should be setting up something to be resolved on the next page. The end of the page is a break in the action.
Resolution on page.
ex 1- Holmes discusses the evidence with Watson. Six panels of clues. Last panel: "Clearly we're dealing with Mormon Ninjas my good man!"
ex 2- Two men are having a sword fight on a cliff. Four panels showing the back and forth. “I know something you don’t know.” Pause. “And what is that?” Last Panel: “I’m not left-handed.”
Set up for next page.
ex 1- The hero steps back from the villain he just punched. The villain laughs, "This is not even my final form!" Three panels. Last panel: "URAAAAAAAAAH!"
ex 2- Party looks down upon the fallen monster and wonder what to do next. "I have a great recipe for cockatrice!" says the dwarf as he takes out his wok. Final panel: "NO!" yells the elf.
The number of panels is merely how many you need to set up that break point. If you have a long set up, create a natural break in the dialog.
ex - Blah blah blah particle physics blah blah. Ten panels. Final panel: "deep breath"
A word about panel layouts
If they're all dutch angles with a lot of dynamic poses, not only will it look like you're trying to hide things you're weak at (backgrounds), it'll be a jumbled mess for the eye to follow. This is a flaw I see a lot in webtoons and in modern cape comics.
Save the action panels for the action scenes. They will pop more when used.
tl;dr- You don't need references. You just need to think about what you're writing a little more.