Looking for collage template

I need to create a 1024x140 image that will serve as the header for my
website. The image will be a collage of several images wherein the
constituent images will overlap at their edges and appear to be
transitioning smoothly. Is there a free PSD template that I can
download and replace my own images to arrive at my target image?
I know the technique that is used to achieve this in Photoshop.
However, if it is so common, a designer should be spared from re-
inventing the wheel. That is the reason, I imagine somebody must have
created a template in which all a designer has to do is replace the
existing images with his own. This would save him he effort of
creating layers and masks.

Thanks,
Yash