Build your files at full size with an 1/8" bleed without any crop or trim marks. If you are unable to submit files with bleed we will try to extend the elements and/or scale up to create the bleed. If your final size is larger than your software can accommodate then work at 1/2 size or 1/4 size.
Send every individual print as a separate page or file, with the page size at the print size plus bleed. We will gang up and/or impose them to get the best use of material.
If you are creating for a multi page small format order set it up as reader spreads, not printer spreads. And don't forget that blank pages are just as important as printed pages.
What type of files should I use?