The curved line in the front bothers me.. The background has lines going in different directions, so it kind of takes away the flow. So, try making the curved line flow in the sig, and place it under the render that way it gives off a more 'coming from' feel
idk about this the curved line in there as said is weird, its not bad, but its not great, keep working
Ah... I would say try designing some of the effects to compliment the round flow of that render then. Still it's not like superb, but it's not bad either.