Depth of field (DOF) too shallow – Should have increased DOF by using a smaller aperture.

The camera bag, hanging off the photographer’s neck, swung down into the photo as close-up photo was taken. Put the bag on the ground before shooting.

Overexposed image (too light) – Should have locked in focus and exposure on a lighter area, then recompose. Also could have used Auto Exposure Bracketing or changed the EV (exposure value) to a minus (-).

Blur due to movement of the subject. Should have waited until the wind died down or used a faster shutter-speed to freeze the subject.

Blown out area due to improper metering. Use Spot meter and meter on or near brightest area.

Wrong white balance setting. Didn’t realize the white balance mode was set to fluorescent. Check camera settings.

Barrel distortion, which gives the appearance that buildings lean inward, was caused by use of widest end of zoom lens. Zooming in will minimize or eliminate the effect.

Can be fixed with image editing software.

Lamp “growing” out of the subject’s head. Move subject to another location or take the shot from a different angle.