Best File Formats
Best file formats for images are .ai, .eps, .pdf. Vectored formats with outlined fonts.
Next is high resolution (300dpi) graphic files like .png and .jpg or jpeg.
Third is A Screen shot of your work in as large a window as possible is good.
And a Closeup picture with your cell phone and email it to firstname.lastname@example.org.
Looking forward to working with you.