Short answer: Don't worry about creating your own "style". That'll come in due time. Focus on improving your skills and study from artists you admire.

Long Answer: When I stopped obsessing about developing a unique art style, I started to focus on studying and practicing daily. Mainly the works of Akira Toriyama, Bruce Timm, Frank Frazetta, and Tex Avery. At that time I didn't think I had style because I was mostly copying what I saw. But having different inspirations to study from really helped develop a style I can say is my own!