I had one instructor who described the three act structure as "closing doors" ----- the point where the protagonist realises that they can't just stay in their old life, but they have to go on this adventure, it's like you're closing and locking the door behind them so they can't go back to their old life. That's the end of Act One, locking the first door. And then the point much later where all hope seems lost and they have to find a way to succeed or else they'll lose something very important, it's like you lock the door behind them again -- they really can't back out now; they have to find a way to face whatever's stopping them, or else! That's the end of Act Two.
I like that description because it's really easy to accidentally picture a "three act structure" where all the acts have to be the same length, but a lot of times they're not!
Here's what my thumbnails look like! It's basically planning the page very tiny, so that you when you draw it at a large size, you already know how you want it to be laid out:
A lot of times I'll end up redoing these a few times, but they're very small and loose so that's not too hard!
Actually, if you look at my scripts, I'll also draw little thumbnails beside my script while I'm working, because it's much easier for me to imagine pages that way:
(I tend to write my script out on paper first, where I can be kind of messy and scribble things out, and then type it up once I'm happy with it!)
You don't have to make your scripts this solid if you don't want to -- but you can also make them much more detailed than this! It's all about what works best for you! Sometimes I'm having trouble scripting a page so I'll just draw a thumbnail first and figure out the script from that. Sometimes I have a page that just has "SOMETHING SCARY HAPPENS (maybe weird shadows??)" as the description for the entire page in the script, and I work it out later when I'm thumbnailing everything. You really don't have to follow any exact rules!
( @stnmaren's outline-to-script is actually pretty similar to how mine usually goes)
That is entirely up to you! Do whatever works for your brain. If you find that you're able to think better when you put it each chapter in its own document, do that! If you're able to get a better start adding onto the previous chapter, then do that!
I make each Chapter script its own document, because I don't script the chapters all at once -- I have the whole story outlined, and basically the way I work is that I work on revising the outline for chapter 4 while I'm drawing Chapter 3, then do page breakdowns (basically, a list of what happens on each page) and script chapter 4, then start drawing Chapter 4 while reading over the outline for chapter 5 and deciding if there's anything I want to change. And then after Chapter 4 is done, I'll start scripting Chapter 5. So for me it makes sense to start a new document for each one.
If you click on someone's name or icon, it should bring up a short description of them and have a button that says "Private Message," so you can just click that to send a message! If you click on your icon in the top right corner of the forums, it brings up a little menu, one of which says "Messages," -- you can click that to see any private message conversations!
I think by default you get notified when anybody responds to your private message, so you'll be able to see it that way, too.