Check each step.

Errors travel. A wrong audience in step 1 becomes a wrong page in step 5. If you do not check, you correct the end and miss the cause.

Ask for a short check against the brief before the next step. Yes or no, plus the miss if any.

Check this step against the brief. Brief: adults; Saturday; ten o’clock; first session; two sentences.
Text: “This page is for adults at the Saturday drawing class. We start at ten; the first session is a short one.”
Reply with Pass or Fail and one line why. Do not rewrite.

Fail it on purpose once: change “adults” to “children” in the text and see the gate catch it.

A gate you can reuse between steps. Cheap to run. Expensive to skip.