citation and make sure to add it to the reference page as well
The procedure subsection should include a step-by-step of how you collected the data (think of a recipe)
Where did the study take place? (online? In the lab?)
Write in order which events occurred (what was the first thing people saw? What was the second? What was the third? Etc.)
Discuss experimental design (describe the conditions, and how participants were assigned to each condition (random assignment?)
What instructions did participants receive, if any?
Were the participants given a debriefing? If so, what information was included in the debriefing?