Usage patterns
〈人〉の流儀を守るto stick to one's own way of doing things
He stuck to his own way of doing things until the end.
〈事〉を〈人〉の流儀でするto do something in one's own particular style
She always does her work in her own particular style.
〈人〉の流儀に従うto follow someone else's way/method
The disciple trained by following his master's methods.
流儀を継承するto inherit/carry on a school's (traditional) style
She carries on the traditional style of the tea ceremony school.