An ethnography study was conducted in this study. The new design tool was experimented by a graduate students in computer engineering, Chiang Mai University Thailand. These students participated in a class of personal process improvement They were instructed to utilize PSP and the student edition of PSP student workbook which can be downloaded from SEI. The students built up their PSP concepts based on seven standard PSP exercises. The last four exercises, assignment 4 to 7, involved full use of PSP design templates. Most students used C++ and PHP as their programming language.