Sketch and Shoot - Workshop Preparation

I am in the midst of the final preparations for the Sketch and Shoot Animation Workshop that I am delivering at the Lawrence Batley Theatre this weekend as part of the Summer Fayre. Here are four frames taken from an example test sequence I have prepared to help illustrate the processes of drawn animation. Can you spot the subtle differences between each frame?

I will upload more artwork and animation snippets after the workshop.....so keep checking back!!