it's great imo am i seeing the blending effect same as your nagato sig oh! i see you choose same background and changed it's color that mach and blend it to overlay am i right. anyways adding C4Ds is nicely done. keep up the good work.
you're doing good bro, you're improvingwork on lightning now, observe where the light falls on the render, and make your light source there, and darken other places, cos...well its too bright
and your text should be close to your focus, which is the place my eyes should rest on
Try working on blending too
The colour scheme is nice though the sig is too bright making it 'over-whelming' to look at. The c4ds are good but I think they could've been used better. Next time try to make them work with the render to add 'flow' and 'depth'. Also, there seems to be no light source. Adding a light source is a good was to add depth to a signature. The light source in this sig in my opinion should've been coming off of this character's right shoulder. Other than that, I think you've done a great job. Ive seen some of the sigs you've posted before and I haven't really commented though I can tell you for a fact, you've improved a lot. Great job
btw, feel free to visit my deviantart page, I've got a few sig tutorials there^^You must be registered for see links