To see the cage you must enter the 3D viewer and check in the "show cage" checkbox. The cage works in this simple way: rays are fired from the cage to "inside", so you only need to extrude the cage ( or move its vertices ) until it covers completely the high-res mesh. As simple as that. Once you're done, press the "Save…
You can invert Y/green in xNormal ; P The Duplicated/symmetry- object need to be flipped in your 3D app before baking if you cannot flip it in the shader.
1. redo your UVs (right now your using < 50%) 2. check your AA settings in xNormal (set to 4x) 3. try not putting your supportive edge loops so close together. In Maya, if you put them to close together to get rid of gradient-- it almost act like a hard edge. As stated in other threads... ALL hard edges must also be border…