What is the main difference in practice between Methodists Lutherans and Episcopalians?

The biggest difference among the 3 is style of worship. The Episcopal Church is a bridge between the Roman Catholic and Protestants. It is rich in tradition and rituals. The majority of Episcopal churches are "high church", meaning being formal and adhering to a liturgical practice. The United Methodists are a direct ofshoot of the Episcopal church and shares most of its beliefs and doctrine. Unlike the Episcopal church, the United Methodists have been more willing to adopt contemporary styles of worship, including praise bands and the like. You will find many UMC that are liturgical and are somewhat formal in their worship. The Lutherans are somewhat in the middle of the other 2. All three are sacramental, believe in the Apostolic Succession, and have ordained ministries. All 3 are in a formal communion with each other-allowing for shared preaching and celebrating the sacraments.