I haven't done much signature work in awhile,but here is some of my old sig work.
As you can see I use the same style on most of my work.
I mainly do web design nowadays... It has been so long since I made a signature.. Last time I tried it was horrible... I blame it on when GimpTalk went down for awhile.. I lost interest.
As for your images, very spacey, but one issue I have with them is your name is hidden. Yellow on yellow kind of thing. I'd go with an opposite color for the name so it stands out more. But, I'm new at this and still very much an amateur.
One thing I'd like to see here is technical help from one Gimp'er to another. At SF, all they do is complement each other. A mutual admiration society. I found very little constructive analysis designed to improve each others capabilities.
Well, IMO, insult away. At my age, I've heard it all. Honest criticism is a jewel to be cherished. IMO, if you only want praise, try SF. With it being so hard to find, all the more reason to nourish it here.