DO NOT sing or present your paper as an interpretive dance. If you've never spoken in public before, give your talk to a group of friends and ask them to tell you what bad habits you've got. Some of the best presentations are made by graduate students because they over-prepare. Some of the worst are by senior scholars who expect their brilliance to carry the day. At least two academics of our acquaintance have overcome serious speech impediments and are really good paper presenters.
Some conferences have commentators on the panels.
You should send a copy of your paper to the commentator of your session at least two weeks before the conference. This will enable the commentator to prepare comments about your paper. At the conference, let the commentator know if you have made substantial changes since you sent the paper. Most commentators and questioners are not hostile, although it may seem that way. The commentator is supposed to put your work in a broader context.