Apparently this is the Double Exposure Effect. Its popped up a lot recently on my G+ and Pinterest feeds and it appealed to me, so decided to have a go.
Both images taken by me, the portrait is of a swing dancer from several years ago, and the bluebells are a springtime event at a local park.
Working in Photoshop I processed the portrait using this method – changing a photo to a line drawing
Then I created a duplicate layer, and changed it to Lighten blend mode.
Bought in the bluebell layer, and added a mask onto the portrait and painted it through using variable amounts of opacity so you could still see the details in her face etc.
Here is a video showing the double exposure process and the example that inspired me originally below
Truthfully mine is a bit of a half assed effort, but I wanted to see if I could grasp the concept. It would work much better if I really knew what I was doing and better source images!
What do you think, do you like the concept? Does it work for you? Got ideas to improve it?