Passport photos have very specific requirements, such as the overall dimensions and the size and position of the face within those dimensions. While those specifics may vary by country the requirements for the image itself are similar. Typically, the photo must be in color and against a plain white or off-white background. The photo must have a clear image of your face with no shadow, glare, and a neutral expression. I am familiar already with the requirements of some governments: U.S., Canada, Germany, United Kingdom. Others are usually available online.
My Availability: I prefer 24 hour notice but I am sometimes able to offer same day service. It never hurts to ask.