I kind of like it. Could have been higher quality but doesn't really matter. Missing something in the top left corner, and maybe make it smaller overall - no need to have the whole character in the picture, maybe just from the waist or the chest. Though I'm wondering how you blend the colors since I'm not sure how to do that yet :-)
Well, there is a clear lack of pandas, aside from that fact the grey background does not look too well with the theme, maybe a black one would serve it better. The effects could have a bit of a glow to it so that you can tell between them and the black, maybe make the red more around the lightsaber area or around the figure so it looks like he is radiating with power.
Was thinking about a smaller render too, also just overlay layers red/black brushing and some blur layers from duplicate render set to lower opacity or on soft light usually work.