My hair may be shorter now but I still use the same technique when I curl or wave it. My hair is naturally wavy so I'm lucky that it holds a curl quite well. This is my go-to hair style and the waves will last for a few days. Albeit they will become messier. I use my Babyliss Pro Classic Wand 32-19mm. You can find it here for just £25 (it also comes in two smaller sizes.) This is my absolute favourite styling tool, it comes without a barrel clip so you may need to use a heat-glove but I'm so practiced with this now I'm just careful where I put my fingers.
I start by splitting my hair in two and clipping the top section out of the way. I curl larger pieces in the bottom half and smaller pieces in the top half. I can then run my fingers through the curls to break them up and make them a little messier. I use Charles Worthington Front Row Sea Salt Spray to add texture and scrunch this into the mid lengths and ends using my hands. That's it done! Perfect for long or short hair.