Thank Photoshop. Normal zoom, New Layer, Freehand lasso tool, feathered 2 px, then Airbrushed with orange alllll over. A bubble-like area was deselected for the orange shade, then re-selected to airbrush the blue flame. All selections ar feathered 2px, as well. After that, just dotted with yellow/orange inside/near the flame, then did a vermilliony Outer Glow with a lot of size and spacing to make it really glow.
See? This is why you should get Photoshop! =P