Image From: Luke Badger Photography
This is an example of the rule of thirds where the subject is on the bottom right and the text is on the top left.
Image From: http://upload.wikimedia.org/wikipedia/commons/1/1e/Large_Siamese_cat_tosses_a_mouse.jpg
This is an example of using the color of font to highlight an element in the image. I also lined up the word food across from the mouse to give it even more emphasis.
Image From: http://www.vangviet.com/wp-content/uploads/fancy-tiny-cat-in-box-wallpaper.jpg
This image illustrates the rule of thirds where the subject is in the lower left and the text is in the upper right. This is also an example of using white space to draw the eye to the text.
Image From: http://ja.wallpaperpics.net/wallpapers/2013/06/%E3%82%AD%E3%83%86%E3%82%A3%E3%81%AE%E3%81%8A%E3%82%82%E3%81%A1%E3%82%83-1440x2560.jpg
This is an example of using different font sizes to contrast an element in the image. This is also an example of using white space to draw attention to the text.
Image From: http://www.magic4walls.com/wp-content/uploads/2014/04/Ben-Torode-cat-flower-lovely-mischievous-wooden-floor-pot-wallpaper.jpg
This image Illustrates using white space to draw the eye to the text.