What the quote should recall
Price validity, payment terms, programme, reference to the applicable T&Cs: a few structured sentences are often enough if the detail lives in a separate document.
Deposits: be explicit
- Percentage or fixed amount, and what triggers it.
- What happens if payment is late or the job is cancelled, within the legal frame.
Versioning
When your terms change, keep a record of the version sent with the accepted quote. Simple discipline that avoids fuzzy discussions months later.