The mosaic effect over it seem nice, but the entire sig is too bright, bit too much lighting present there So add a brightness&contrast layer and fix it up a bit if you could
The contrast is still a bit too high, it is hard to see what the person really looks like. The mosaic is nice, as already said. The text could be placed a little better, like maybe over the forearm of that guy and a little twisted and a little smaller so that you do not have the distraction. AAnd remove that border.
I like the first one the best. Defiantly good, i'd rather have a briter sig than a dark one. I think it is good the way it is imo.
Brightness and Darkness depend on the site lawl. If you have a site like this one, you rather want to have a bright signature because the whole site is black. If you have a board which is fully white, you d rather go for a black signature.
