This paper focuses on how to design and develop a usable Touch Screen Mobile Courseware Application (TMCA) by using usability features recommended in the literature. For our study, we consider usability features that are imperative for blind users such as widget usability, validation, feedback and navigation. We explain the usability features needed to address the relevant usability issues in design and development of TMCA for blind users. We also suggest the appropriate location for control items or widgets in a flat screen. Furthermore, we make recommendations for ways to satisfy usability features through existing features. The study shows that prospective educators cum developers can implement usability features as a base for addressing usability for blind users to a significant extent. Although the usability features are guided by the literature, said features are simply defined in the literature. There is no guide for designers and developers demonstrating how exactly to achieve such features. The proposed approach in this paper makes the TMCA more usable for blind users and it is more likely to achieve its objectives.