A knitting dilemma

Here's the thing -

I want to make a waistcoat, well, I want to make a number of waistcoats, and I usually like to create my own pattern.

However, in among the pattern stash is a basic pointed-front waistcoat pattern which would do as my template, and then I could just add the colour patterns as needed.

However, if I do this, my dumb pride will be dented, as it won't be all my own work.

So, do I make up my own pattern (using an existing fabric waistcoat for measurements) and design it all from the ground up? Or do I think "why put yourself through that" and just add the colours and stitches I want to the existing pattern.

Am I guilty of pride or laziness?

Answers on a postcard please to.....................