Don't worry about trying to develop a style. Style is what you can't help doing. If you write enough, you draw enough, you'll have a style, whether you want it or not. Don't worry about whether you're "commercial". Tell your own stories, draw your own pictures. Let other people follow you.
Neil GaimanShe had such unusual eyes. They made me think of the seaside, and so I called her Ocean, and could not have told you why.
Neil Gaiman