I know I experiemented and tried to get a fire style lighting in there but doesn't seem i succeeded n thatone
Render is way too dark. The blur on the left side and upper right corner looks too artificial, I would've added a bit of black soft brush on Soft Light to get that effect instead. The FX to the top right of his hand/saber looks really sweet, but doesn't contain any concept at all. Overall I like the colors and the effects, but try to make them stand out a bit more, and try to add at least a little bit of concept, not just random effects and textures.