Following on from my foray into pattern-fudging I've gathered together for myself some information on how to go about things the right way.
I'm posting this here - so that if nothing else I can find the links again easily for when I need them next time :)
So, here's to do it the non-fudged way!
Grading Pattern Pieces - Properly!Links to tips/tutorials:
(1-4 are all on BurdaStyle.com)
3: (by the Selfish Seamstress herself!)
4: (For sewers who just want to
enlarge a multi-sized pattern by a couple of sizes without using grading techniques).
5: (from Threads Magazine’s website)
6: (Threads Magazine)
7: (from The Dressmaker’s Resource, Pattern-Making.com).
I do own a lovely grading book but I've yet to read it and as a beginner I'm not ready to whisk up a new pattern-size overnight, so this will wait a little while longer to get tested.
P.S. If I find anymore links I shall be sure to add them onto this list :)