Skeuomorphic Design
It's a bit out of style, but we definitely recommend that you take some time and read up further on skeuomorphic design.
Skeuomorphic Design
Flat design! Skeuomorphic design! Fight! Sacha Greif has a great blog post detailing the differences between both design styles, which we highly recommend.
Creating an App Icon
Icon Slate is one of our favorite apps for previewing and properly sizing up app icons for any iOS or Android application we work on. It's a highly recommended tool.
Finding a Unique Look
We discuss a couple companies that have created their own look, including Panic Inc., The Iconfactory, Rovio, and Bolt Creative. Visit their websites and take a look at their apps, and we're certain that you'll see the strong visual style lead by these companies.
Building Art That Scales
We discuss different icon sizes, and these requirements can change drastically over time as the operating system providers make art requirement changes. For Android, we suggest visiting Google's iconography guide before starting a project. For iOS, Apple's human interface guidelines is the specific page to check.
Building Art That Scales
One topic we wish we could have touched further upon, but is deserving of a book in and of itself, is vector art asset creation. Adobe Illustrator is our tool of choice for creating vector art, we highly recommend giving it a look.