Incremental sheet forming (ISF) is a versatile, flexible, novel and cost-effective method to form sheet products when small batches or prototypes are mandatory. It is a green manufacturing technique that may conserve energy and resources in industries. The surface finish is an essential aspect of the ISF process and is frequently impacted by a variety of factors throughout the forming process. As a result, this research report aimed to examine the process factors that affect average surface roughness (Ra). The AA3003-O sheet is used for this investigation, and the process parameters are chosen as wall angle and step size. A factorial design and analysis of variance (ANOVA) test are performed to determine the statistical importance of those process parameters on the response. The outcome establishes that a significant reduction in surface roughness is observed, associated with a decrease in vertical step size along with an increase in wall angle of the front side of the sheet. Furthermore, in the case of the back side of the sheet, the Ra value is found to be increasing with an increase in wall angle as well as step size.