I've found the below tutorial which I think touches more upon American Traditional (I'm not sure if this is the right title for the style!), it starts with a shape where a larger circle encompasses a smaller one, like a fried egg! On paper this looks relatively simple, but I'll be putting it into practise soon and seeing what I can make of it.
The tutorial below was posted on Pinterest by a user who didn't cite the source, so I'm unsure who made it.
Picture 1 - Steps 1-4.
Picture 2 - Steps 5-7.
It's also worth mentioning how brilliant it is that the creator has started it off with a simple pattern to follow, and has followed it through right until the colouring at the end, showing how easy it is to turn those shapes into an end product.
