Focus on outcomes (what changed as a result), not just tasks. Consider both individual and team contributions.
Be specific and constructive. What might improvement look like in practice?
Think about how they get things done (e.g., collaboration, initiative, communication). Where have you seen this show up?
Provide a specific example of what they do (or how they do it) and the impact it has/has had.
Consider their strengths, and where they could contribute most to team or organisational priorities.