Has anyone made their own kite from scratch? I have a number of kites lying around, and to be honest, they don't look that hard to make. I'm thinking about trying to lay one out, study it carefully, try to reverse engineer it and make the prototype out of cotton (cheap). Then I could try and shrink it down from it's current 10m to an 8m (again in cotton). Then if that works, I would try to make it out of ripstop and hopefully I will have a $100 kite.

Is this a terrible idea?