The purpose of this research is to improve informative and narrative writing skills of middle school students. The study was designed with action research. The research group is middle school students. Data collection techniques were student diary, semi-structured interview form, semi-structured observation form and documents that consist of comics produced by the students. Descriptive analysis and content analysis techniques were used together in the analysis. It has been determined that the writing process has not attracted students; however, comic books have been shown to attract students. It has also been found that the process of semantic interpretation of the text is facilitated. It has been determined that most spelling and punctuation mistakes were made in the writing process. It is thought that the reasons for these mistakes are the habits of out-of-school life. It has been determined that writing processes related to multimodal texts have a positive effect on students' interest and sense of responsibility.