The French Twist is as refined an updo as you will ever see. It is the epitome of sophistication, and can be worn by any woman at any age. I’ve been trying to master this style for years, and I could never figure out what I was doing wrong, until I spotted this tutorial from Lilith Moon.
The tutorial takes the guess work out of pinning it properly, securing the ends and building volume at the crown (tease thin sections, not thick ones). It also helped me realize the mistake I was making. I was using the wrong kind of bobby pins.
Instead of the traditional flat bobby pin, you need to use the wider hair pins. This will keep your twist from being flattened and give you a more secure hold. Very important.
Lilith Moon also has great tutorials for both short and long hair, including this twisted updo and this vintage bun tutorial. A word of caution though, her accent is a bit heavy, so it can be tough to understand her. You may need to watch the video a few times before you fully understand what she is saying.