Iterate your interface, too

Most developers are familiar with iterative development for software but for some reason don’t apply those same practices to user interfaces. User interfaces, possibly more than any other part of an application, need real user feedback.

This iterative approach to user interface design is why taking advantage of natural user interfaces when possible is so important—the designers of those interfaces (and users themselves) have spent a lot of time going back and forth fine-tuning how people interact with them. By incorporating natural UIs into your application, you can take advantage of all that refinement and preloaded user knowledge in your application.

Sketches and wire-frames are a critical part of user interface design, but before you pull out your pencil and start drawing, you need to put thought into what exactly is important to your user.