This document is a design portfolio belonging to Alex Brown Jr. that showcases various drawings and sketches he has created. It includes pencil drawings of characters like Betty Boop as well as vehicles. It also shows 3D models and engineering drawings Alex created for school projects involving parts like a motorcycle head gasket, link assembly, and tractor piston. The portfolio demonstrates Alex's skills in techniques like perspective, shading, modeling in Autodesk Inventor, and rendering concepts for products.