Orangeremi~~Sigs

I need some help with GIMP 2. I'm working on a sig and have the background set. I have also chosen the render. But whenever I paste the render onto the background, the background turns white. I know this is because my render is bigger then the entire section, including the white part of the image. But is there any easy way to get rid of this 'white outline?' It is annoying me, because I only have one transparency tool, which is a brush and it occasionally runs over my render. Any way to let me me fill it in using the bucket tool? Or atleast a different, easier way?

EDIT:I got it finished, and it was a hassle, it's in my sig right now. After all the filters, it came out pretty good.. It looks like I might have used a few to many though. What do you think?

Also: Move to Off Topic please.

I also still want to know how to fix the problem..

MY first one made using Photoshop:

 

Re: GIMP help?

Well, honestly, I had it moved to offtopic because my sig was finished. I got around it using the transparency tool. I was making the render transparent so you could see the background, but it was a hassle.. Not really the render, but stuff around it, just extra, white stuff... I had to use a brush.

Anyway, Now I have photoshop, so no need to worry about it.

 

Re: GIMP help?

It's connectionish
*Hint Hint*

 

Re: GIMP help?

Yes, exactly, but GIMP had no magic wand... anyways, I edited another sig into the 1st post. The kirby one I have now was made by penguin. But what do you think about mine?

 

Re: GIMP help?

Another sig up in the 1st post. What do ya guys think?

 

Translated:
You're stuff sucks, go here to learn different ways to suck.

 

Thanks guys, is there any thing really bad/good about my sigs? I think they look good, but that may be because they're mine.. what do you guys think?