frequency-separation-retouching: update

frequency-separation-retouching.md

@@ -1,21 +1,28 @@
 ---
-title: Frequency Separation Retouching
+title: Frequency separation retouching
 category: Others
+layout: 2017/sheet
 ---
 
-Frequency separation retouching in Photoshop:
+### Frequency separation retouching in Photoshop
 
-1. Duplicate the layer twice
+Duplicate the layer twice. Perform these in each layer:
-2. Lower layer:
+{: .-setup}
-  - Apply **Gaussian Blur**
-3. Upper layer:
-  - Set layer mask to **Linear light**
-  - Image → **Apply Image**
-    - Layer: select the lower layer
-    - Blending mode: Subtract
-    - Scale: 2
-    - Offset: 128
 
-## Reference
+#### Lower layer
+
+- Apply **Gaussian Blur**
+
+#### Upper layer
+
+- Set layer mask to **Linear light**
+- Image → **Apply Image**
+  - Layer: _(select the lower layer)_
+  - Blending mode: `Subtract`
+  - Scale: `2`
+  - Offset: `128`
+
+### Reference
 
 - <https://phlearn.com/amazing-power-frequency-separation-retouching-photoshop>
+{: .-also-see}