Luminous Spook shape templates - for laser cutters
For a high-tech approach to making shapes based on the outlines of the Luminous Spooks, use a laser-cutter with MDF or acrylic plastic, 2 or 3mm thick. Files are in svg format.
Download this file, unzip it and look at the README file to get started.
You could make moulds from the laser-cut shapes and cast glow-in-the-dark Spooks using a suitable medium, say resin with glow powder, or hot glow-in-the-dark glue from a glue gun.
Make these moulds from modelling clay and add raised detailing, such as Tilly's ruff, by scratching these details into these moulds. Or make modelling clay masters and scratch those for recessed details.
If it's possible to convert the files to a suitable format for 3D printers, you could print the shapes using luminous plastic.
It may also be possible to convert the files for use by vinyl cutting machines and then to cut shapes from luminous material.
PLEASE NOTE: as far as I can tell, there is no suitable glow-in-the-dark material for laser-cutting! Also, I understand, you should never laser-cut PVC, such as is used on luminous boards for safety signs, or vinyl sheeting, because toxic chlorine gas will be released!