Design "How it works section" on website

Industry: Lifestyle/Travel
Description of every page: I have the following template purchased from theme forest http://mustachethemes.com/themeforest/previews/?theme=pacific.

I have modified the template to suit my new service. The section that is labeled 'About us' in the template demo is now labelled 'How it works'. I would like a simple and clear design here that demonstrates how to use the service. The design I would like, would be similar to a 'snake-trail' where each step is stacked and oppositely aligned e.g. step 1 aligned left step 2 below step 1 and aligned right.

A good example of this is the 'feature' section on this site https://squareup.com/register# which has nicely incorporated images of the service in each step. I also envisioned each step being joined up by a squiggly dashed line just like the one seen on this website http://99designs.co.uk/how-it-works that is shooting out of the paper aeroplane.

Lastly I would like to replace the Gallery section with images of the service on a few devices (computer, tablet, phone etc) probably using one of the freely available PSD's like http://michaljakobsze.pl/portfolio/flat-apple-devices-mockups/.

I would ideally want the HTML and css provided so that I can simply insert them into my landing page and continue with development.

Ideas for the visual style: Must match current template
Website information: Provided on inquiry
Urls to draw inspiration from: http://michaljakobsze.pl/portfolio/flat-apple-devices-mockups/ https://squareup.com/register# http://99designs.co.uk/how-it-works http://mustachethemes.com/themeforest/previews/?theme=pacific
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