Feedback is one of the most essential and powerful tools for education as it can help guide our students to become more effective and educated computer scientists. Two common forms of feedback are knowledge-based (e.g., content knowledge, assignment efficacy) and behavior-based (e.g., submission habits, engagement) feedback. While previous research has considered knowledge-based feedback in some detail, feedback support in terms of behavior-based skills has received comparatively little attention. We are investigating student perceptions about the use of a submission-based feedback tool used in a CS2 course. We adapted existing frameworks to our case due to the lack of existing directly applicable frameworks, but sought to verify their relevance through the use of a mixed methods approach. This poster outlines our two-step process utilizing Nominal Group Technique (NGT), a structured focus group method, to generate questions for a survey instrument that was in turn used with a larger audience. We found this method to be successful in reinforcing the adaptations from existing literature, and revealing other factors that students find important for inclusion in the qualitative survey.