Blurry or out-of-focus subject.
Incomplete or missing limbs.
Poor lighting or harsh shadows.
Overexposed or underexposed areas.
Unintended motion blur.
Incorrect white balance or color cast.
Cluttered or distracting background.
Lack of sharpness or detail.
Awkward or unflattering posing.
Incorrect composition or framing.
Distorted perspective or proportions.
Unintentional lens flares or reflections.
Unwanted objects or elements in the frame.
Unappealing facial expressions.
Uneven or distracting textures.