As long as you like it... that's all that really matters.
But, I will crit with my personal preferences, and say that the yellow needs to be black, the green areas needing to be a mix of yellow and red. Yes, my suggestions are somewhat trendish, but I'm finding the saturation of yellow and green to be horrid.
Seems a lot to me slim// that you're acting a lot like me, but the sig is definatly something i wouldn't have done. Yellow, come on red orang but not yellow. and the brushing that i do see is very unattractive and horrible over saturated.
1/10. Even though you don't care about ratings it give you a good sense of what other people think about your sigs