This is the Mona Lisa, probably one of the most famous images in the world. Putting a frame around her doesn’t make her any more amazing. Putting a load of white space around her would detract from her. There is a decorative frame on la Gioconda but that is principally to hold her onto the wall. Images in your presentation do not need a frame, they should fill the whole space available and “bleed”” off the edge. If your image doesn’t fill the screen, find another one, don’t “frame” it. Additionally, there is no value in adding titles to images. Your delivery (p3) should encompass this. Images work on their own, don’t reduce their value by adding frames or text.