Hi Deb,
On the upload page you'll see the following information:
Acceptable File Formats:.jpg, .jpeg, and .png
Maximum File Size (MB):25 MB
Maximum Image Size (W x H):No Limit
Upload the largest size your camera allows without exceeding the 25MB file size. Additionally, be sure your artwork is Adobe RGB or sRGB colour space. FAA does not accept CMYK or ProPhoto colour spaces.