Made the comment already on the download page, but I'll repeat it here as well.
My only critique would be that, on the borders of the panels it looks like you used some photoshop render clouds. It would be more fitting for the TF2 style to use some brush strokes that follow the length of the edges. I'd probably just use the eyedropper to grab colors and brush over the current texture in order to achieve that effect.
Overall I think it looks great, just that one little tweak and it'll be perfect for TF2.