A coming soon page exists to solve a timing problem: your business, whether that's a new shop, a relocated studio, or a service that isn't quite ready to open, needs some kind of web presence now, before there's a full site's worth of content to put on it. The mistake a lot of coming soon pages make is trying to be a full homepage with half the information missing, when the job is actually much narrower, tell people what's coming and give them one clear way to stay in the loop.
A good version of this page usually needs just a few things: what the business is, roughly when it's opening or launching, and a way to get updates, an email signup, a phone number, or a link to your social accounts if that's where you're posting updates in the meantime. Describing this to Nova, for example "a coming soon page for a bakery opening next month, with our name, what we'll offer, and an email signup for opening updates," produces a page built around that description, and you can look at a live preview of it before publishing to a free getnova.pro subdomain, without needing an account to get that far.
One limitation worth planning for: Nova builds the page itself, but it isn't email marketing software, so a signup form still needs to connect to an actual email service if you want to manage that list and send updates as your opening date gets closer. If you'd rather not collect emails at all, pointing people to an active social account works fine too, the page's job is just to exist and say something accurate, not to run a full marketing funnel before you've even opened.
Less than it feels like it should, your name, what you do, and roughly when you're opening is usually enough; save the full details for the real site once it's ready.
It can add urgency if you have a firm date, but skip it if your timeline is genuinely uncertain, since a countdown that resets or disappears looks worse than not having one.
Yes, once you're ready to launch the real site, you can go back and describe the fuller version to Nova rather than treating the coming soon page and the final site as two unrelated builds.
Describe what's coming to Nova and get a simple placeholder live before your full site is ready.