This whimsical curtain was very easy to make. It's just a piece of linen fabric that is the same size as the window (frame included), wrapped up with two large ribbons (made out of the same fabric). I have been cheating a little bit at each side of the curtain, shaping it the way I want with a hidden needle. This kind of curtain is for decoration only, but I also use it for hiding a window blind.
Another version that my amazing mom made for us. She rolled the fabric on a curtain rod.
I love these kind of curtains since the rooms seem bigger, we get more light in and our little kid can't tear them down..