The left kind of gives off a technology/matixy kind of feel, which as we all know, is practically the opposite of Bob Marley. Just an opinion though.
My first thought when looking at this was that the lighting was off: his face is lit from the left, yet the light side is the right, which seemed somewhat inconsistent, and broke the immersion for me, I would have used a lighting effect that was spotlight form from the upper left going down to the lower right to keep the light consistent. Something that was said to me early on in is that in signatures, having a ton of text really just takes away from the focal, and that at most a few words should be there. I do in many way feel that this is correct, as when you have a lot of text, the eye immediately choses that to focus on, rather than the subject, which inevitably leads to a split focal. Going to what I said in the other thread about dead space, I feel that yours has a problem of too much of it, and done wrong. The space with the text, despite its activity is essentially dead space, as there is nothing there that you should actually be looking at, however because of its variance, it is not a place to rest the eye either, so it becomes just a flaw in the piece. One thing I would like to say here is that you should try to make your piece so that it can stand on its own without the text, rather than using it as the primary effect medium, so that the piece is interesting, and with complementary text, it can go that much further. (I tried a new style of response, more qualitative and suggestive I think, though if you find my list of terms more useful (rattling off focal, flow, blending et cetera) just tell me)
What if I made it yellow? Hrrm, I like your new critiquing style. Sounds a little less .. systematic? Which means more down to earth I suppose. Wow, and to think I thought it was decent as it is. Alright, so lighting and a split focal seem to be the main problems here. The thing is, I really want to keep the text somewhere just because it's the main reason I chose to do this sig. I'm wondering if I can make it less cluttered, yet leave the text in? I'll give it a go with and without it, I guess. Edit: I couldn't do it without making it look ridiculous. Added v2 Edit 2: I have a feeling that the dead space won't be fixed any time soon. I have no idea what to do with it
hmm...Still not quite right, the lighting is just a bit too exclusive, and now the space to the right is completely empty. Maybe in the lighting effects let the ambient light go up somewhat, or try and use an omni direction light, or even just reduce the opacity of the lighting layer until it looks better. As for the dead space, you can probably use something to give directional movement, though I am not quite sure what you would use for that in this one..