During my Etsy wanders, I stumbled across Boo Jewellery and her blog, where there are several very useful tutorials. One of them is a tried and tested necklace display stand template has been developed and is freely available for all to use.

This time I've used a pack of A4 240gsm silver card - 99p for 4 sheets. I enlarged the template a little to get one stand instead of two from a sheet of A4, to accommodate the length of my crochet necklaces.
Here's the result in very little time - great! I'll be using these at the Local Crafts and Gift Market I'm doing in Falmouth on Halloween.
Thanks Boo for sharing your experience and template - I can recommend it.