You can send your Artwork in any format - Raster Formats such as .jpg, .tif, .gif, .bmp, pcx , dxf , .emf , etc. or Vector Formats such as .cdr, .ai, .eps, .wmf, .ect, etc. while sending Vector formats, Please don’t forget to convert the active fonts to curves, outlines, or paths otherwise we may not be able to read the same font that you have sent.