Your Sirius designer has the ability to leave a lasting impression on your end users, and every detail counts. In this presentation, you will see the new features to improve the user experience of your own Sirius-based designers. This talk will start by reviewing how to improve Sirius diagrams with a consistent style guide to quickly communicate your intent to your users and tips and tricks to speed up common tasks. We will show how you can use the support of the Properties View to delegate some of the complexity of the model elements of your diagrams to the Properties view. In this tabbed-based view, you will be able to easily organize and prioritize how the features of your domain will be displayed. Starting with Sirius 5, you will be able to provide a smooth user experience by defining dialogs for your designers. Dialogs can be used in your Sirius tools to help new users configure model elements during their creation for example. Come and see how your dialogs and Properties view will be able to share some common parts of their definition using composition and extension mechanisms in order to keep a consistent user experience with the same look and feel. Finally, improve the discoverability of your Sirius projects with the Activity Explorer used to create workflows to guide your end users and the brand new *.aird editor which will let you manipulate in a common place all the concepts of your modeling projects with its semantic models, its usable viewpoints and all its representations. After this session attendees should be ready to leverage the latest UX improvements of Eclipse Sirius.