What did shakespeare add to macbeth to king james 1

When he wrote it, he added Scottish elements to the play.  Apart from being set in Scotland, the two-fold balls and the treble scepters refers to James’ double coronation that took place at Scone and Westminster.  In the play, the two balls symbolize King James’ double insignia that he wore to show his reign over England and Scotland.  The treble scepters were symbols for the kingdoms of England, Scotland and Ireland.  Another symbol is Malcolm’s citation of the scrofula.  This was attributed to James’ belief that his touch could cure.  This was said to have come from Edward the Confessor.  James was a patron of Shakespeare’s plays and Shakespeare added these elements to the play to show his appreciate for the King’s support of his theater company.