The odd thing is, they don't all really say the same thing. Most of them say come up with a concept so that must be good advice ... except that it really seems almost the same as come up with a character. So, I'll help you out a little bit by talking about some actual methods by which characters are created.
The number of stars on the flag is fixed at 12, and is not related to the number of member states of the EU (although the EU did have 12 member states from 1986 to 1994). This is because it originally was the flag of the Council of Europe.
The Number of Stars. in the American Flag. When two new States were admitted to the Union (Kentucky and Vermont), a resolution was adopted in January of 1794, expanding the flag to 15 stars and 15 stripes. This flag was the official flag of our country from 1795 to 1818, and was prominent in many historic events.