As I could remember seeing a lot of them, I thought that it would be easy to find something that someone had already done and just copy it. Maybe I was just not typing in the right search terms, but in the end I just decided to go for it and see how it turned out!
I made 3 twisted flowers, of different sizes. I started with chains of about 35, 27 and 23 - I can't remember exactly. To make these flowers I follow the below pattern and a 3mm hook. (UK terms)
Chain a length of crochet - depending on how big you want it.
Row 1: Treble crochet into the 3rd stitch from the hook, *chain one, skip one stitch and treble crochet into the next stitch* Repeat until end of row.
Row 2: half treble crochet, 2 treble crochet, half treble crochet and slip stitch into each space until end.
Leave longish tails, roll the flower up, when you're happy it looks flower like start sewing together. This pattern was what I could remember of this flower pattern, so it is very similar, but does create a slightly different looking flower.
I was really pleased with how it turned out.