how to add custom style to mapbox?

[Kingflyinger]

I have searched the way to add custom style to mapbox and found nothing.
but the six existing styles is too boring, so anyone knows how to add custom style to mapbox?

[Kingflyinger]

is there anyone knows the way? I`m a new learner,but I do feel there is an easy way to add a custom style to the chart.please help me out

[candy4290]

I have the save question, how to fix it?help！