Experience in Automotive interior plastic trims-Worked on Catia v5•Curvature and draft analysis of Class A surface.•Making the close volume from A-style surface and maintaining uniform wall thickness.•Class A surface feasibility.•Extracting parting line for part and features.•Dump to parametric conversion.•Adding the features like Snap, Clip-tower, Ribs and Dog-house to the part considering RPS system with 3-2-1 principle of locating.•Providing solution for undercut and plastic defect like sink mark, warpage considering root thickness.• Basic knowledge of plastic injection molding processes.• Awareness of GD&T.