Would you marry someone, just because of her style? Or do you want that person to have also an interesting life (plot), an interesting character, an interesting environment and a nice cover to look at?
A story should have everything. It’s that simple and it’s that hard.
Style is, in my humble opinion, not something you should focus on. It’s the result of “you, the writer” and the tone you want for the story. I write fiction, non-fiction and sometimes even poetry, but my style is always ‘humour’, even when the way I tell the story or give the information is completely different for every piece of work. If I’d try to be serious, it would only make me laugh. I can’t escape from myself, and if I can’t make people enjoy reading what I write, it wouldn’t be me who wrote it.
Don’t confuse “style” with “tone”: you should have various ‘tones’ to tell the same story in, light or simple or literary or popular or bombastic etc etc, and you can work on getting better (or not, which is also a style, the “I think I’m already good enough” style).