After getting Photoshop 6 running using wine in Linux (the other versions wouldn't even install) and having a lot of stability issues with it I've started getting the hang of the Gimp. But, there are a lot of features that I'm having trouble with. Let me show you what I mean... here's a sig I made using gimp:

First of all, I'm not really artistically talented, and as you can see, all my sigs are quite amateurish. But, I'm learning and recently got the hang of using fractal brushes to make sigs.
With that out of the way, here are some questions I need some help with:
1. What do you guys think about this sig? Rating, criticism (good, bad, anything goes), tips and suggestions would be a big help.
2. Can any experienced user in gimp explain to me how to add the blending options like glow, bevel and emboss (that are so easy to apply in photoshop) to a single layer (such as any text on the sig) without affecting the other layers?
Till now, I've been had to create the text in a new file, apply the desired script-fu and then merge the layers in the new file and then copy past the text into the original file. Now, this isn't too much fun if I've got to try out different kinds of script-fu and keep repeating this laborious process.
3. Finally, I've got the layer-effects plugin from the gimp repository, which supposedly is supposed to imitate 'blending options' in photoshop. But, it isn't working like it's supposed to ... the decorations and shadows show up wherever they want to and sometimes they don't even show up at all. Has anyone got that plugin to work?
This is kind of a long post, but it's these small things that have been driving me crazy for the past few days. Any help will be appreciated.
Thanks



