We like use Werewolf Breeding to show how a creator manages to create mobile-friendly (aka webtoon) format and print format. The creator has 2 version of the same comic on Tapastic.
Visit: http://tapastic.com/toyou
@Sketchmazoid - Space is your friend. Yes, it is great for pacing. It's also great for illusion. For example, many creators only have enough time to create one page per week. If you just read one page, it feels too short. If you spread out the panels, it can make the story feel longer. Also, some creators spend a lot of time figuring out how to fit panels into one page. These creators actually save time by not dealing with it.
When we talk to successful webcomic creators who were later able to successfully sell prints, the best advice (put into my own words):
Don't even think about physical print, but focus on your readership. We live in digital/mobile age where people are increasingly reading comics on mobile device. Every reader who who comes across your comic and is annoyed zooming in to read your comic is your loss. You just lost someone who could've bought your print later in the future. If you are thinking print before readership, you are thinking of the business side first and it will probably fail. If you are thinking readership first, your will grow your fan base and they will demand physical prints to collect. At that point, you'll figure it out how to deliver and sell your physical prints to your fans. Yes, the panels may not fit perfectly and there may be weird spaces within pages. Yes, you may have to scale down and even cut some panels. Yes, you may have to redo some panels and it might be annoying to you. However, you will have fans wanting print and willing to spend money to purchase.
@foxiesocks @elixiadragmire - Yes...sorry but Tapastic won't support double page spreads. We want to advise creators that it is very very important for the content to be easily readable when readers use their mobile devices.
@talissacosta1 - Haha...I think you did a great job explaining. One fact that comic creators don't really realize is that users today are very accustomed to scrolling down. All mobile apps (FB, Twitter, Tumblr) are scrolling-based reading experience. Infinite scroll is used everywhere on websites.