Hmmm.
There are a few major problems, and please don't be upset by my pointing them out.
-First off, don't use a background. Use transparency. Check GFX Tutorials section for my guide on how to do this ^^
-Secondly, however you're working is very low resolution. It looks like you created the image and then doubled its size. Two tips for general image improvement:
-Work in higher resolution
-Work with the image larger than it's going to be and crop it down to whatever size you'd like. Have you seen FireZ's avatar? I made that around 500x500 when I designed it.
-Thirdly, the glow effect isn't a glow at all, which is the problem. It's a stroke around the border (which I'm sure you're well aware of,) but strokes are usually pretty low quality. I'd suggest removing it, as well as the next tip:
-Fourth, the glow doesn't work with the text. Your text is going for the embossed 3d effect, while the stroke lies flat behind it. I'd suggest adding a drop shadow instead, or bringing the glow (after you feather it) in a little, as if it's surrounding the text like mist.
Hope I helped,
Blade.