3. Then I changed the colour using either Colour Balance or
Channel Mixer.
4. I made three layers and did the same to each one, I then changed the
opaticy of the top two layers and moved each one slightly to make it
looked doubled up.
5. After I had flattened the three layers together I then changed the brightness
and contrast again.
6. To finish I changed the colouring of the three layers together using
channel mixer.