On the subject of "style" or "feel"... I'm currently working on a master's in Fine Arts and this is one of the concepts we regularly visit in school. Every instructor I've ever had has insisted we develop a "style" in our chosen art. Not surprisingly, this is also the thing that students rebel against more than anything else.
Inexperienced artists want to do something new and different with each work. They think it's exciting and the only way to discover all the varied ideas that only they can express. They also have lots and lots of different ideas they want to let out.
The reality is that flitting from idea to idea and style to style is a shallow approach to art. It's easier to do something different every time than it is to find a style and spend your life developing that style through different works and different ideas. Then each work will force you to grow and dig deep to find creative ways to make your work new, while exploring and expanding the known boundaries of that style. That's how you truly find something new and substantial that no one has ever done before.
Look at the works of any great artist in any medium. They all have a style, Sondheim, Van Gogh, Woody Allen, Seurat. You can spot their work never having seen/heard it before. Their work may develop and change over time into what seems to be a new style. But it's usually still just a developed expansion of their original style. The body of work should show the identifiable progress and growth of an artist as he develops ideas as only he can. The style is just the road he uses to guide his progress.
Art has a double face, of expression and illusion.