To take a picture, you have to have line, shape, and colour to make it good.

Lines help the picture look bold and can make the picture look sad or angry

Shape helps the picture look angry if it had jaggy shapes, it would define anger or frustrated.  Soft shapes can define sad or depressed.

Last would be colour which is the most important part of taking a photo. Colours like yellow, white, green and light blue show happiness. Dark colours show lonly or depressed.