I notice the fire from the skill cuts off under the killdead, you may want to fix that to make it look a bit better, I also suggest resizing and a border, maybe rounded edges.
Its too big, and the skull looks out of place composition-wise, the font is too busy, and there is no border.
It's a lot better of a first sig than mine was.
Good job for a first try.
ps: Regarding The hack forums.net sigs. I dont hack i use the white hat section of the forum white hat= ways to stop hackers and keep your site safe
black hat= hacker I hate hackers they stole my steam account awhile back.
Not bad sigs/banners better than i can do. I use to go to hackforums.net for when i need help with hackers and stuff. I use to be a black hat but im done with that non-sense ha.