It's common these days to attach a sample of a few pages to your kickstarter, or to put up a preview on popular online storefronts. This is great! It allows the potential purchaser to get an idea of the type of writing they'll be getting if they purchase the product or support the kickstarter, etc. In order to make the preview effective, though, it should do a few things. It's it's a traditional room/key adventure then make sure your preview shows a few of the rooms. This allows the purchaseser to get an idea of both the type of writing you'll be providing as well as how you are laying out the rooms. If it's encounter based then ensure you're showing an encounter. if it's heavily NPC based, or town based, or X based, then ensure that your preview shows some of those NPC's, town entries, or X. These previews of the heart of the heart of the adventure are much better for setting expectations with the consumer then, say the first X pages of the adventuer. The title page, the cover, the table of contents and the backstory and introduction are usually what's in those first few pages are they are far, far less useful to a potential purchaseser when making a buying decision.
If you are just starting out, consider making the product free, or Pay What You Want. You will get substantially more people buying, and hopefully using, your adventure. presumably you're writing it because you have a passion. Don't worry about monitizing things at the start. You'll still need to pay any edtors, layout people, or artists, so you'll be taking a loss on the adventure if you don't do these yourself. It is, though, very unlikley that you will make back your outlay for art, editing, layout, etc in your first few adventures. Consider publishing for free, building your base and gaining experience and THEN you can begin to dream, as we all do, about making at least some beer money.
Does your adventure have a back cover with ad copy? Why? Back covers are useful for physical products but the vast majority of products will only exist as PDF's. PDF back covers don't need a back cover with ad copy; the purchasing decision is not mad eby picking up the book and looking at it; it's made by looking ta your preview and your ad copy in the product decision.
Likewise, please ensure that, if you adventure has a level/experience range, you put that on the storefronts description of the product. It's much mroe likley that a purchaser is looking for a Beginning level adventure, or an expert level one, etc, rather than "The new adventure by Bryce Lynch!" Put the level range someplace prominant, or at least on the cover, so folks can use that to assist in making a purchase decision.
Watch out when considering using fancy fonts in product that yoy maintain legability. Fancy fonts, cursive fonts, and so on make the product less legible when reading it and scanning it ta the table. Exceptions can be made, of course, for handout and the like. But if it's meant for the DM remember that one of your jobs is to make the product as easy as possible for the DM to use.
(does legibility go in to Usability section instead?)
(guy's tips)
(go find out which font is easier to read)