Best file formats are:
Adobe Illustrator .ai, .pdf, or .eps file
Photoshop .psd file
Raster .TIF or JPG image (300 dpi at least)
Don't have these formats?
Send what you have and we will see if we can work with it. We will never print artwork that is not going to give you the highest possible
quality, but often we can re-work or convert an un-usable file.