Do not include very low resolution or pixelated images.
Do not create images that contain violent, discriminatory or offensive content.
Do not use excessively repetitive or cluttered textures that could cause image distortions.
Do not use unusual or extreme camera angles that could distort the image.
Do not include excessively bright or dim lighting that may impair image viewing.
Don't use colors that are too intense or vibrant that may look artificial or unrealistic.
Don't use conflicting image styles that can cause a confusing or inconsistent appearance.
Do not include irrelevant or unnecessary elements that could detract from the composition of the image.
Don't create disproportionately proportioned images that may look odd or unrealistic.
Do not use images that infringe on copyrights or are illegal in any way.