Darwin Wiggett at Nature Photographers.net has some tips for making your images look like Michael Orton's impressionistic, dreamy photos.
• Open your image in Photoshop and make a duplicate of it. • Go to Image>Apply Image. • Select the "screen" blending mode and set the opacity to 100%. • Go to Filter>Blur>Gaussian Blur to blur the image, but don't get carried away! (Wiggett suggests a radius setting of 15-50 pixels.) • Drag the blurry image on top of the original image. • Go to Layers and change the blending mode to "multiply." • Flatten the image.