Teaching observations have become a ubiquitous feature of teacher education programmes, development schemes and assessment regimes. Whilst the processes and procedures of classroom observation are well documented, the feedback which follows teaching observations has been given less attention. Most research into teaching observations focuses on eliciting teachers’ perspectives on their experiences of being observed. In contrast, we examine two aspects vital to teacher development and enhanced teaching practice: (1) post observation feedback talk; (2) teachers’ enactment of feedback following the feedback session. This article argues that examining feedback talk and how talk may influence enactment can help both observers and teachers maximise the effectiveness of teaching observations. We focus on suggestions, a common way of helping teachers to develop and improve. We analyse empirical examples of authentic post observation feedback talk to explore how suggestions are made and responded to, identifying features of suggestions which prompt teacher understanding and enactment. Analysis enables us to provide observers with concrete advice on how to make suggestions, thus showing the practical affordances and methodological warrant of analysing feedback talk.