Thanks for the positive comments guys. I
am pretty pleased with it!
It might not be saleable, however, because the total cost of kit, bushes, drills and blanks came to £53.35.
I know that the bushes and drills are re-useable (although I doubt whether I will ever be able to afford to buy more than one or two more kits), but I reckon I would need to ask for between £50 and £60 for it at the craft fair I am attending in November and I doubt whether people will pay that much for it.
However, looking on the bright side, if it doesn't sell, I get to keep a lovely writing instrument!