This series of postcards are for a coaching company to send out as Christmas cards.
Each has a theme (other than Christmas!) relating to skills taught during the coaching sessions. So they work to promote the company and also reinforce the skills that have been taught.
The seven dwarves represent the pitfalls of public speaking...
...Santa discovers the importance of preparation...
...Scrooge finds his voice...
... and the three shepherds realise not everyone might believe their story...