My new  (90 x 90 cm) della porta kite with a tail of  7meter.The sail is made of  a mix of 2 kinds of fabric (ELLTEX) grey and (SKYTEX) black . 

The technique is based on what I learned over the past months of Christian Baden Powell.
You start with a 100% scaled drawing of the design.  Put this drawing on your light table and
 fix a piece of black fabric onto the drawing. Press down well.