links to help with polygon modelling steps to follow

http://hw-arts.blogspot.co.uk/2011/11/some-basic-rules-in-polygon-modeling.html

http://everything2.com/title/Polygonal+modeling

http://www.3dworldmag.com/2012/07/19/tips-and-tricks-for-organic-modelling/

http://www.jldeanart.com/what_is_good_modeling.pdf

Edge flow and topology

http://www.hippydrome.com/

http://vimeo.com/10941211

Quick sketch of how the edges would look like.