The other move that unsticks this: do not ship sixty percent of everything. Ship one hundred percent of one thing.
A product that does the whole job badly is hard to describe, hard to trust, and disappointing everywhere. A product that does one narrow part completely - the part that is most mechanical, most tedious, and least dependent on judgement: is easy to describe, easy to trust, and genuinely good.
Look at your few days of work and find the piece that is pure grind with no real decisions in it. That is the first version. It is a smaller promise and you can make it without hedging.
What this gets you beyond the copy:
You can charge confidently, because you are not apologising.
You find out whether people want it without having built the hard parts.
Your own service gets faster, because you now use your own tool for that step. That alone often pays for the build.
The next piece to automate becomes obvious from what people ask for.
The instinct to ship the whole workflow at sixty percent is very common and it is where most of these stall. Narrower and finished beats broad and partial, every time, and it is also the version you can actually write a landing page for.