Below is the Haunted Manor from the cereal packet, slightly cropped for straight edges left and right and with a digital repair to the lower edge, ready for printing on A4 paper at the same scale as the original, without the need to faff around with printer settings. Again, make sure the page scale is set to 100 (%) when printing! If you want to turn it into a 3D model, see instructions here, or a modified example by 'Spooky' Steve here.
Make your own LS shapes using the document below - you get two sets of Spooks to work with which could be useful if you make a mistake or two. It's been sized for A4 paper - make sure the page scale is set to 100 (%) when printing. If printed correctly, Alf the Apparition should be 6.5 cm in height. Cut out the shapes with scissors. Use luminous paper and you've finished; with plain paper or card, you'd just need to coat the shapes with luminous paint.
Alternatively, lay the printed sheet on top of some suitable material, such as luminous vinyl or modelling clay rolled to 2 or 3mm thickness, then transfer the outlines using pin-pricks to the material underneath and cut out the shapes by hand.
Please note: the outlines are very close to, but not exactly the same as the originals. I have used some artistic licence to make minor modifications , namely to the cat's eyes, to the helmet on the suit of armour and to the decoration on the clock.
If you'd like to make your own replica of George, here are wonderfully detailed plans, kindly provided by Steve Moore:
Now you can have your very own copy of this terrific spooky scene, to the same scale as the original, ready to frame - click here! For that authentic touch, how about printing it on luminous paper, or using luminous paint on the Spooks? Again, it's sized for A4 paper and again, make sure the page scale is set to 100 (%) when printing!
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.
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!