Some wonderful work kosienutter, something to be really proud of

Just one hint if I may be so bold, if you give the matt paint a quick once over with an acrylic gloss varnish, the decals will adhere much better, thus preventing that 'silvering' effect.

Those look like the early Airfix examples, you really have done a great job of those, do keep it up.

If you feel really adventurous, try some of the Tamiya & Hasegawa 1/48th scale scale kits, they are rather splendid & make up into really impressive models.