Welcome to HaloMods for starters.
That Sig...needs work .
Check here for a list of graphic sites with tutorials that will help you make better Sigs .
Also, well done for keeping your Sig under the restrictions, if you don't know the restrictions, the image size has to be maximum 500pix width and 120pix height and 75kb or below filesize.
Don't be wack, calling that signature trash is like calling mine trash considering mine is a gradient with a lens flare...
Here is a tip.
Don't use brushes at all, if you need to, use one brush (not brushset, brush) or the defaults.
I mean, if everyone used brushes, they would be nobody to make the brush.