Lovely creative contest Jerry! And such a generous reward!

Your contest inspired me to create a tutorial post on how to create these header banners so that they look great work well on all devices.

Anyone who wants to enter this competition might find this really helpful. I've also included a downloadable template that you can use to work from!

I hope this is of use to some of you who are good designers but less technical!

HOW TO CREATE A STEEMIT HEADER IMAGE TUTORIAL: STEP BY STEP INSTRUCTIONS AND TECHNICAL INFO INCLUDING: BANNER SIZE, MOBILE VIEW, COVER TEXT READABILITY, RESOLUTION, IMAGE SIZE OPTIMISATION....
» https://steemit.com/steemit/@eco-alex/how-to-create-a-steemit-header-image-tutorial-step-by-step-instructions-and-technical-info-including-banner-size-mobile-view