"One of the hazards of learning a song from a recording is that one tends to pick up the accent of the original singer. By all means, learn to sing it like the original, but then learn to sing it as yourself."

Same applies to tunes, of course. You will or should adapt it to your own style whether or not you learn it by ear or from the dots.

That's if you've got a good "style", of course. You may want to try and emulate a musician or singer or get ideas on how to improve yourself. One still shouldn't slavishly copy.