Before I started modeling, I created a box and scaled that using real world car measurements. After that, I found the blueprint image, cropped it into four parts: left, front, back, and top. Imported into Blenders as Background Images separately and scaled that to match my bounding box with real-world car measurements. This always helps me to see if the blueprint size fits the car measurements. Then I added a simple plane, cut it in half, applied a mirror modifier, and started modeling using mostly Extrude, Grab, and Scale tools. All modeling steps are recorded in the video after I set up the blueprints. I also used reference images of the 2020 Audi TT RS from all angels on my second monitor.