The small capital outlay to make these will pay you back in money saved and lack of frustration.
Gasket paper=Approx 0.8mm(3/64")
Yellow pages(Engineering Supplies) or Ebay
Cheap set of Leather punches(Metric or Imperial) off ebay.
Melted down big fishing weight as a,"Last" to punch into.
Boot Black polish stick or similar to mark parts so you can press the part onto the paper to make the template.For example.
Clean the surface of the rear engine cover so it's dry and free of all debris/grease/oil etc.Light rub with Scotchbrite or 500 wet and dry to make a good surface for re-fit.Then wipe with some tissue.
Paint plenty of Liquid boot black onto the surface and quickly press the cover onto the paper and press down for say 10 seconds.
Then punch out holes areas with the punches into something soft like the lead I use or a bit of soft wood.
I use a small pair of curved blade scissors(Toe nail scissors<grin>) to cut out the rest.
TIP:Keep the centre piece of paper as it can be used for smaller gaskets like the Tacho drive.