For the three photographs above, I took the pictures outside at night time. I thought that this added a unique and mysterious effect as well as creating a more gothic feel to the photograph. I played around with using the flash on my camera - which did give a ghostly effect, however I preferred using the outside light, as this gave a slightly softer effect.
To create this effect in photoshop, open up your two images, and copy and paste one into the other as a new layer. Then change the opacity to around 50%, however this will change depending on your chosen photographs. For some of the images I also changed the layer type to screen, as this gave a more over exposed effect which I think made the ghost effect better and more interesting, as it was harder to see the 'ghost'.
For the two photographs above, I took this photographs inside using softbox lighting. I put them quite close as this gave a harsher effect - which made everything look slightly more doll like - relating to the fairytale idea. The second photograph is more faint which I think creates a more ghost like effect - it also creates the idea of two separate ghosts rather than just one in the background, which I think is interesting.
This photograph above is simple and is just of the flower headband that I was wearing. I thought it was a contrasting image as it combines both the black and gothic feel with the plain and 'innocent' white background and porcelain skin.