A tidy tender that answers the wrong question still fails. Before you draft the specification, name the commercial problem in plain language: what outcome you need, what constraint you cannot move, and what a bad award would cost you later.
Write that problem down where the evaluation team can see it. Then design the competition around it — requirements, questions, and scoring that test the same thing. Tools and templates help after that step, not instead of it.
If you are stuck between two shapes of competition, book a short call and walk the problem for thirty minutes. The document usually gets easier once the problem is clear.