Give my PowerPoint Presentation the WOW factor!

I am an image consultant presenting a workshop at the end of next week. Above all my presentation needs to include some audience participation and an aspect which includes using some props. There are 2 areas in which I require audience participation that is slide number 8 where I ask the audience what springs to mind when they see these colours and again at slide number 10 when I explain how to go from business to evening wear simply by adding statement and jewellery and changing from flats to heels. This time around I may be presenting to some audience members who have already seen the original presentation, I would therefore like to make some minor changes to keep it fresh and give it a cleaner, less cluttered appearance. I also thought of perhaps dropping in some video from YouTube which shows several ways to wear a scarf, so in responses, please advise if you are able to do this. I would require completion by Monday, 8th July.