Uhhh, not so good. I think you should try to start following some tutorials.. I know your new to making sigs, but there are beginner tutorials out there that are easy to follow with great outcomes.
Just trying to help. Don't get mad at my post. (I dont know if your that type of person)
Also, try sticking with a reasonable size. Try to say within the 300's x 100's.
I use 380x120. Maybe try that.