jIM Carroll has a good point by singing the song unaccompanied first, you can bring out the story of the song.
when you play it on the guitar, remember the song is in 6/8,the best waY to get the correct ryhtymic pulse for6/8 is to pluck a bass string with your thumb,on the first beat,but make the thumb last for two beats, on beat three pluck a treble string,then on beat 4 thumb again for two beats but not quite as strong as beat 1,then pluck atreble string on beat 6.THE RHYTHYM IS HUMPTY DUMPTY
                                        1 2 3 4 5 6, This rhythym 6/8or jig time,is unfamiliar to many rock musicians,consequently many guitarists struggle with it,it is not even but stressed first beat and to a lesser extent beat4.DickMiles