How to sew doll dress without pattern.

The easiest way to sew a dress for a Paola Reina doll 31cm height. This method is also suitable for other dolls like Little Darling, Ruby Red Siblies 31cm.
Prepare 2 pieces of fabric (calico) measuring 20x20 cm and one measuring 8x4 cm, a button, an elastic cord with a width of 3 mm, pins, scissors, a needle with a wide eye or a pin, a sewing machine.