We only offer two options for formatting your map print: wide or tall. We cannot "tilt" or "rotate" the image. The reason is that north has to remain north to make true-to-scale maps, which is what we sell.
One option would be to access our map imagery through our subscription service, the MyTopo Map Pass. This service would allow you to download a digital image of the area, which you could then open up in photo shop or any graphics program. You would then be outside of our limitations, and could manipulate the image graphically and send your design to your local print shop.