After the build · Start Your Server

Features set up for you. The Build report lists every feature the build configured, ready to try, with a link straight to its channel in Discord. If one needs a finishing touch (usually a channel), it is flagged with exactly what's missing.
Undo and backup. In the menu at the top right of your server, Download a backup saves the pre-build snapshot as a file and Undo the last build takes the build back: what it deleted is brought back, the names, sections, settings and permissions it changed are put back and the features it switched on are switched off again. It also takes back the role menus, ticket panels, feeds and role rewards the build added and cancels the events and scheduled posts it made, except a ticket panel with open tickets and anything you changed since. The channels and roles it added stay. Restored channels come back empty: Discord cannot restore deleted messages, which is why deletions ask for explicit confirmation.
Save it as a template. Like the result? Save this design as a template in the same menu keeps it under Your saved designs for the next server, and you can share it with other owners (your Discord name shows as the author, and you can make it private again any time).
Keep refining. The conversation stays open. Ask for changes any time and build again; repeat builds only apply what's different.