1. Open PowerPoint, File -> New; Home -> Layout -> Blank;
2. With the first slide selected, hit Return to create 19 more slides;
3. Command + A on a Mac or Control + A on a PC to select all the 20 slides, Transitions -> uncheck the box of On Mouse Click, check the box of After, then put 20 seconds; This will enable the slides advance automatically in 20 seconds.
4. Then go through each slide, to add images and/or text;
5. When finished, like a regular slide show, go to Slide Show -> Play from start. 
6. A PowerPoint template for Pecha Kucha presentation is available to download here DMC-PechaKucha-presentation-template.pptx.

Creating a Pecha Kucha Presentation Using Keynote

1. Open Keynote, File-> New; Choose a theme, a Photo Essay is recommended.
2. With the first slide selected, hit Return to create 19 more slides.
3. Command + A to select all the 20 slides. Animate-> Start Transition -> change it fro On Click to Automatically - Delay 20.00 S. This will This will enable the slides advance automatically in 20 seconds.
4. Then go through each slide, to add images and/or text;
5. When finished, like a regular slide show, go to Play -> Play Slideshow.
6. A Keynote template for Pecha Kucha presentation is available to download here DMC-PechaKucha-presentation-template.key.zip.

Note: Google Presentation doesn't have 20 seconds option to automatically advance the slides. File -> Publish to the web; auto - advance slides, (1,2,3,5,10,15,30 seconds, 1 minute).

Tips and Tricks

1. Checking image resolution
   1. If an image is in a very low resolution, it may look pixelated when it is projected to a big screen or printed large. 
   2. Upscaling images by adding in more pixels will reduce/minimize pixel artifacts. This interpolation process increases pixel count.  However, it can't increase the amount of details. If the detail was never captured it can't be replaced. The results of upscaling images are nothing like what you'd get with an image that was higher resolution to start with. 
   3. On Mac, open the image with Preview, Tools -> Adjust Size...
   4. On PC, open the image with Paint, Home -> Resize...
   5. Increase the image resolution to match the projecting device's resolution. For instance, DMC's projector has a resolution of 1024x768; DMC's multipurpose room's big screen has a resolution of 1920x1080.
2. Picture superiority effect
   what can people remember three days later?  Oral – 10%, visual – 35%, oral+visual – 65%. Source: Najjar, LJ (1998) principles of educational multimedia user interface design (via Brain Rules by John Medina, 2008).
   1. Brain Rules for Presenters http://www.slideshare.net/garr/brain-rules-for-presenters/112-Why_is_vision_such_a
   2. Web storytelling http://www.slideshare.net/cyberandy/web-storytelling-and-open-data-publishing-for-tourism
3. removing image background
4. adding highlights to images
5. checking image resolutions
6. using smart chart
7. Animations
8. contrast of images

Finding Free Media

References:

1. Creating a Pecha Kucha Presentation Using PowerPoint http://blogs.cofc.edu/tlttutorials/2012/10/25/creating-a-pecha-kucha-presentation-using-powerpoint/

2. 10 Tips to Create and Present Pecha Kucha    http://blog.indezine.com/2012/05/10-tips-to-create-and-present-pecha.html

3. Pecha Kucha: tips, resources & examples https://catherinecronin.wordpress.com/2012/06/13/pecha-kucha/, http://www.usc.edu/dept/education/CMMR/Pecha_Kucha_TipsResourcesExamples.pdf

4. How to Fade Your Images in PowerPoint without the Help of Photoshop http://www.guidingtech.com/16107/fade-images-powerpoint-without-photoshop/

Fade Images in Photoshop Using Layer masks

Photoshop Levels 

Photoshop Levels - Output Levels

Creating mask in PowerPoint http://technotoolbox.blogspot.com/2009/09/creating-masks-in-powerpoint.html

What is the theme? - PowerPoint https://support.office.com/en-us/article/What-is-a-theme-7528ccc2-4327-4692-8bf5-9b5a3f2a5ef5

Theme colors handle both light and dark backgrounds very well. There are visibility rules built into the theme so that you can switch colors at any time and all your content will remain legible and still look good.

The light colors are always visible over the dark colors and vice versa, such as when dark color text is used over a light background. There are six accent colors that look good over any of the four possible background colors.

When you click Colors in the Themes group, the colors that you see next to the theme name represent one set of light/dark background color and the accent colors for that theme. If you change any of these colors to create your own set of theme colors, the colors that are shown on the Colors button and next to the Theme name will be updated accordingly.

Notice how the dark and light text and the background colors are automatically switched based on the background that you choose. Many slide show projectors show dark backgrounds and light text better than they show light backgrounds and dark text.