My first application for Windows Store is already published! It is a very simple application but now I know the complete process to publish an application on Windows Store.
The application is localized, at the moment available in English and Spanish. More Localization details.
I have developed this application before for Windows Phone. I used a Portable class library to implement the Business Logic of the application – Models and Common classes. The Views and View Models are contained in different platform specific projects (Windows 8.1 + Windows Phone 8) . More details here.
These are a couple of screenshots of the Application:
It is optimized to run on PCs and Tablets with Windows 8.1. You can execute it in full screen or snapped mode. More details here.