copied original source layer, desaturated partially
step 2 of 5
2nd copy of original source image used "neon glow" filter, and set layer to "color burn" with 65% opacity.
arranged to be top layer.
(layer1 original source, layer 2 desaturated source, layer three color burn source)
step 3 of 5
flames started. each section of flame on seperate layers, set layers to screen, drop opacity around 45-50%.
used smudge tool to blend to frogs toes.
step 4 of 5
more flames added
step 5 of 5
brightness/contrast adjusted
(last step after this is a gradient overlay done in black and yellow, radial reversed.)