20 PATCH GREY SCALE and GRAY SCALE
 

First off I take my 20 PATCH Grey Scale and Drag and Drop it on my 10 VALUE - GRAY SCALE and VALUE FINDER in my Original Image.
Next I Align Patch #9 of 20 Patch Scale over Value 6 of G S and V F in Original Image Bottom Left Corner.
Next I set to work in Hue Saturation (B and W) and (Color), Color Correction, Contrast and Sharp or Blur Tools to Tweak Image.
When I finish, I Resize and Crop Image for Posting and Sending.

A late thought of explanation - when I put my #9 over #6, my idea is to make a SEAMLESS MATCH of Grey Tones between the Two Grey Tones using Brightness Tool in Hue Saturation.