No Mutants Allowed

There's nothing wrong with drawing art in the manga style. Drawing bad art in the manga style, though, annoys the crap out of me.

Source: am someone who draws in manga style, can't draw for shit, annoys crap out of me.

There is no manga style. There is just people aping a show or manga they read.

Focus on getting the basics of anatomy and space first, don't copy "manga", just find how you yourself interpret and stylize reality.