Well, i don't really know how Guitta has done this. Normally she does not use any postwork techniques. In the a l'oree du bois the effect from my pov comes from the selection of objects and materials. All orientated in a similar direction. But i could be wrong. One possibility to get an effect you are demanding is, to position a plane directly in front of the camera. Give it a very transparent but structured texture (material). I have done it in my Vue Gogh image for example. But try it out simply!

One day your ship comes in - but you're at the airport.