And here we go once again. This time the light source is at the right spot I think, it is a little bit hard to focus on that render since you put some white c4ds above it. The background is kinda similar to the other signature you made, try to vary it a little bit so that all your signatures does not look even. But this one is pretty nice work Remove the border from the text and rather add a clipping mask of the full signature to the text than a gradient. ^.^ You can blur the background a bit to get some depth. The flow on the right side is nice, try to add some on the left as well. The render itself is a little hard to figure out. You got some stuff to work on. ^.^
The sig itself looks too chaotic. You should try making the signature brighter. The text isn't readable, so you should try for a plain font with a color that stands out. ~T9
Its very nice except for the text and the fake light source. You could try make the text a little larger and the use levels and curves to adjust the brightness and darkness.