Childe Harold's Pilgrimage; Canto 3

In the first section (Stanzas 1-18), what does the narrator tell us how and why he created, and how he differs from, the hero?

The Narrator sets him self up as a creator, Byron even having this Narrator mentioning a daughter Ada (Byron's own daughter's name) which concretes him as a voice in control and of creation. He creates Harold who is almost a more intense version of himself, "A being more intense, that we endow//With form our fancy, gaining as we give//The life we image, even as I do now" Harold almost sounds as though he should be an idyllic person, or at least a more fanciful version of the Narrator. The Narrator is nothing, calling himself exactly that, "What am I? Nothing." Harold however is a creation that the Narrator may "traverse earth//Invisible but gazing, as I glow//Mix'd with thy spirit, blended with thy birth,//And feeling still with thee my crush'd feelings' dearth." So he acts as a sort of figure in which the Narrator can extend himself as the readers may also do and live vicariously this interesting existence.