... was part of a class I taught recently.
It isn't strictly a masterboard - more of a strip that we created and cut up.... This is the demo/sample I created in class (unfinished/unrefined) that I cut up and gave different borders to.
In class we mounted the panels onto white and kraft card blanks because I wanted to show how different the panels can look when you mount them on different colours... (apologies for the dodgy photo quality)
Here are the panels from the top photo mounted onto different backgrounds:
These are fun to create and make 'batch' card creation much easier - they're the same but different.. I like that.