Image/Adjustment/Hue Saturation (Cntl
+ U) Use these Settings: With colorize checked
Hue: 0 Saturation: 60 Lightness: 0
6)
Make a new layer (Alt + Cntrl + Shift
+ N)
7)
Apply steps 2 to 4 to the new layer and
then set the layer's mode to Overlay
8)
Image/Adjustment/Hue Saturation (Cntl
+ U) Use these settings: With colorize checked
Hue: 90 Saturation: 80 Lightness: 0 Once done
merge visible (Cntl + E)
9)
Duplicate the layer and apply the following
effect on it. Filter/Distort/Shear undefined
areas: Check Wrap Around Make the line look
like wavy forward slash (/) or something similar
to below
10)
Set the current layer's mode to Lighten
and you should get the effect of steam rising
up through your lava flow.