Esthetic veneers are thin custom made shells that cover the labial part of the anterior teeth. They are also known as dental veneers, porcelain veneers, porcelain laminate veneers. They are used to mask the tooth discoloration, further used to the teeth which are worn out, chipped, broken, uneven or irregular in shaped teeth. For the success of esthetic veneers proper preparation design is needed. The aim of the study was to evaluate errors while preparing designs for esthetic veneers. We reviewed patients records, analysed data of 400 patients between June 2019 to March 2020 and clinical findings were recorded. The data was then tabulated in microsoft excel. Chi square test was used for comparison of groups. Within the limitations of the study, we found that the clinical errors surfaced after evaluation are moderately low. This shows a positive outcome of the esthetic veneer treatment.