I agree that the height should be cut by around 50-100 pixels, because box sigs look like images and not sigs. The random green doesn't work much but the black and white need colour, so what you could do, is go back to where it had colour and add a gradient map on it with two colours (like black and orange) and but it to a low opacity. Doing this would make all the original colours match and flow more. Mess around with more colours and gradients to make it work.