You dont have to unwrap the high poly because all you're getting from it is ray data from the normals on the polygons. You only need the lowpoly UV'd so it can bake the proper normal data on the material sheet. So if you unwrapped the high poly you kinda wasted time but you'll learn from it. If that one IS your highpoly, go ahead and put more detail into it for better normal mapping ![]()
Nice job though.