... conect the out color of the normal map to the normal camera of the shader... render normally...

TIP: one thing ive noticed when normalmapping is that if it finds 2 heights at the same spot it doesnt takes the greatest one but crashes... so to make complex patterns like the chainmail or scales youll have to make a displacement map frist, then apply it to the mesh then convert displacement to polys and THEN those polys to normal map

(I still hate uvmapping and making tiles...)