It looks like you have your mask/glow on a solid, right? That solid isn’t the same size as your composition and more importantly the size that you need to cover your light saber.
Create new solid and push the “make comp size” button. Then you will have to redo your work.
You could try selecting the solid and pushing “cntl-alt-f” this will resize the solid to the comp size, but it will stretch it out and move everything around.
There is also a “grow bounds” effect. I rarely use that, but you might be able to place it above your glows increase the size by 60 pixels and that might do the trick.
Good luck,
Johnny Cuevas, Editor
http://www.ckandco.net