After brainstorming about the back-story, I converted the story into the shots /stanzas. Each stanza is completing one set of actions so I marked each stanza as one shot.
Then I started writing story in my words for each stanza. Where I decided what character would be doing what action for each line according to available time. This helps to know which characters will be present in the chosen shot and what actions he or she would be doing.
While doing this I also decided how the transition between two shots is going to happen. There are different ways of showing the transition of place, time and situations. I simply wrote them on the paper next to the song.
Sometimes you may need to change things while drawing story sketches or storyboard according to timing and camera angles. If you think the story can be portrayed in better way or another camera angle will be more suitable, keep the ideas flexible. You should experiment with different ideas and techniques to make it more dramatic.
Don’t forget to write down or sketch all the ideas that come to your mind. You may find some ideas or sketches more interesting and suitable for the story telling.