After the break are some quick thumb nail sketches which break down various figures into component parts, constructed using simple shapes. The idea is to give some realism to the implied movement in a cartoon or to allow the character to have life in an animation. The use of construction allows you to make the character 3d and to play around with the proportions and characterisation rather than working from observation alone/life (as I am used to, which is a different skill) and to draw realistically but purely from imagination.
So here is before I practiced
Here is where I do more research (and because I have always loved the pink panther).
Here is how it helps. This last one is the first one I like.
Initially stuck on heads with fairly similar shapes and constructions I needed to work on imagining the whole character.
Below is a page of some alternative shapes from Vincent and my efforts at researching a few cartooning legends.
Finally I try to apply the cartoon style starting with the 'life' image from which to draw key characteristics.
This task will take longer as it involves proper character development of two contrasting leads in a given genre and we could choose from a few ideas. In the end I went with film noir, I am thinking Letham meets Chandler. Comic book heads in the know might recognise some of the suggestions Vincent gave us to research - I know I have heard (read read) their names mentioned on Comics Alliance and other places round here before.