Today, agile methods become a popular approach to develop software systems. They try to satisfy customer, respond to changes, release in less time and achieve suitable profits for developers. XP is one of the most popular agile methods which is currently being used and different kinds of research have been accomplished about its various aspects such as pair programming. In spite of all benefits known of XP, it does not involve architectural techniques yet. As it is mentioned in many technical reports, the way to achieve high quality of system is to consider its architecture as an important matter in the development process. This paper introduces two practices in order to empower XP's development process toward improving system's architecture. The main characteristic of proposed solution is that it is derived from values and practices of XP in order to be compatible with XP process model and to keep its agility intact.