Contemporary research indicates that student creativity is crucial to the success of arts education. Self-regulated learning has become one of educational psychology’s most critical research areas. However, there is limited research on creativity in arts education in self-regulated learning. Therefore, this study aims to define the creativity characteristics that determine the quality of students’ work. This study implemented a creative competition in painting and composition for first-year undergraduates. It was conducted at a Chinese university with the participation of 178 first-year students aged 18 to 26. It evaluated the characteristics of creativity during the three main phases of the task: planning, execution, and completion. We investigated the subject by employing semi-open questionnaires (n = 178) and using the content analysis method and quantitative analysis. According to the competition results, the students with the highest scores in flow, inspiration, and idea generation in the performance phase had the best quality work. In the forethought phase, analogical thinking and idea generation worked best for most students, while in the performance phase, flow sense, idea generation, and idea manipulation worked best. Data on creativity characteristics at different work phases and final quality might adequately guide and organize educational procedures. These findings can serve as a theoretical foundation for quantifying the creativity phase in self-regulated learning and offer arts educators a reference for creativity instruction.