The Gradient Map should be the topmost layer first and the Hue/Saturation below it in the Layers Panel.
在图层面板中，渐变映射层应该是顶部图层，色相/饱和度图层在它的下面。
2
For the specular map the fabric areas of the texture are muted the most, the skin area usually gets a very de-saturated cyan-bluish hue and has a layer of noise over the entire specular map.