I can't believe you did that to my image, man!
It looks messy....
I can tell you were using photoshop in there. This is how you save a file from another location:
Right click > Save As
It seems like you just flat out "print screen" and put it into photoshop, and then saved the file.
Here's the real version for those of you who wants to judge it on what its intended:
I saved it as PNG for a reason, to make the corners seem like they're invincible. And yes, your banner can be a png, just go into ACP, and paste the real url, as it was uploaded.