① make sure the light is sufficient.
② stand in front of a clean background, no restriction of indoor or outdoor.
③ single color background is better.
① smile naturelly or speak professionally and confidently.
② side shot under 45-degree angle.
③ don’t look down or look up.
① image resolution > 300 ppi.
② leave enough space around protrait.
③ take it horizontally.
Incorrect white balance
Face filling frame
Body turned sideway 90 degree
Objects blocking person