Hi and welcome, thanks for the fire... , The red color is too RED... , I am sure that if you change it for a nice and soft wood, I t will be awesome... Ps: Message for all the French in the forum "Please stop to say that we are not strong to learn other language" or "sorry for my English"

Make a greyscale mask of where you want the reflection - white means 100% reflection, black means 0%. Add it to the Perpendicular slot of a Fresnel map in the reflection layer.