1. Comb your hair well. The method works on any kind of hair, no matter if it's freshly washed or not. Mine was.
2. Take a hair tie and put your locks into a high ponytail. Don't tighten it too much so you don't damage the curls when you take the tie off.
3. Spritz your hair until it's damp (not soaking wet!). You can skip this step if it's still damp after the shower.
4. Find some pieces of scrap fabric (or just recycle and old T-shirt). You are going to need 2 for waves (my case), 3 for big curls and 4 for tight curls.
5. Divide and conquer! (Here, I split my hair into two sections. I have also tried with 3 and 4 sections and it works out great). Slide the piece of fabric underneath the hair tie, hold the end with a hand and wrap the section around the ribbon with the other. This will give you waves, rather than doll-like curls you would get if you rolled the hair around it.
Keep wrapping. (Donuts!)
6. When you finish, just tie both ends of the piece of fabric together. Repeat on the other side(s).
7. Now do whatever you want for half an hour. You can eat, change your clothes, check your emails and so on. You can even sleep like this, it's not uncomfortable or do this in the morning. The more you leave it in your hair, the more defined your curls will be. For me, 30 minutes was enough to get waves.
8. Unwrap 'em!
9. Remove the hair tie carefully and add any hair product you like.
(Excuse the frizz, I have only combed it with my fingers and I didn't even look into the mirror, haha)