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. 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
2. removing image background
3. adding highlights to images
4. checking image resolutions
5. using smart chart
6. Animations
7. 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