STEP A
Click and drag layer 1 into the create new layer icon. Do this twice, in order to have 3 layers
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STEP B
Delete the backround layer (the one that´s locked) and rename the 3 layers: Black line, green line - light, red line - shadow)
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STEP C
Blending mode: set "Black line" to Multiply. All others stay in normal. and turn off the eye icons except for "Black line"
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