The growing technology today provides unlimited knowledge through smart gadgets. Mobile learning is getting popular among children nowadays. However, poorly designed mobile applications tends to diminish children�s cognitive skills, which claims to be one of the most important skills in their developing process. User Experience (UX) have been defined as the usability experience of a specific user while operating the mobile application yet, this concept has not been adopted while designing learning mobile application for children. UX claims to be an important aspect while designing a children mobile application for learning because children�s experience differs from adults. Researchers have been highlighting on cognitive aspects when designing educational mobile application for children yet, there are no models or guidelines which can be referred by designers. Hence, this paper aims to enhance Experience- Centered Web Design Model by connecting a cognitive dimension. This study conducts a literature review to develop Enhanced Experience- Centered Web Design Model. A qualitative pilot case study has been conducted in order to amend all the necessary skills before conducting the actual case study method. It includes of semi-structured interview and observation method. The pilot study analysis will be referred for any amendments in interview questions and observation method to be further conducted for actual case study data collection of the study. The study will then develop an UX guideline which would be referred by the mobile application designers when designing a children educational mobile application for learning environmental sustainability. © BEIESP.