Junior and senior year of high school, I led the design and construction of my Class' homecoming parade float. I used CAD (Junior year Sketchup, Senior year OnShape) to create 3D models of the floats. This helped other members of the team visualize what the final product would look like. The junior float won but the senior float only took second place because the parents built the freshmen's float and they picked a better theme. It's not my best work but it's some of my first.
Junior Float Design
Senior Float Design