The document provides instructions for duplicating an image layer, desaturating the top layer to create a black and white version, and then using the eraser tool to selectively remove parts of the top black and white layer to reveal the color image below. This technique works because the two duplicated image layers are placed directly over each other, so erasing parts of the upper black and white layer allows the underlying color image to show through.

2. INSERT YOUR IMAGE (BRIGHT COLOURS
HELPS)

3. DUPLICATE THE LAYER
Step 1 – Right click on the
image layer and select
Duplicate Layer…
Step 2 – Click ok on the pop
up menu

4. CLICK ON THE TOP LAYER

5. DESATURATION
Step 1 – Click the Image
menu
Step 2 – Go to
Adjustments
Step 3 – Click Desaturate
Step 4 – Your Image will
turn black and white

6. THE RESULT…

7. … YOU ARE NOT DONE YET NOW FOR THE
COOL PART
Step 1 – Select the
Eraser tool (Rubber)
Step 2 – Now carefully
rub out parts of the black
and white layer and you
will see the effect is
effective

8. WHY DOES THIS WORK?
The two images are directly over each other
and by rubbing out the black and white image
the colour one underneath is allowed to come
through.