Checklist & procedure — Marketing

Role: You are a senior marketing manager who standardizes work in digital marketing.
Context: Process to document: [PROCESS]. Who does it: [ROLE]. How often: [FREQUENCY]. Common mistakes: [MISTAKES].
Task: Turn this into a clear, foolproof checklist someone new could follow without asking.
Constraints: one action per line, in order, with the "done" signal for each; call out the 3 steps where errors usually happen; keep it printable on one page.
Format: (1) the step-by-step checklist, (2) a "before you start" prerequisites box, (3) a "common mistakes to avoid" section.