Many beginners don't understand the importance of gesture/ under drawing and/or
they are under the mistaken idea that accomplished artists don't need to do this step at all.
He is a lovely example of artist Kaoru Mori working up a piece. Note how she doesn't just start at the top and work her way down with her final line work but builds up structure on which the finished lines will be laid down.
http://www.youtube.com/watch?v=wfENoePp36o&feature=player_embedded
