Figure out what you want to print
You have two choices: the first and easier one being to just grab a 3D model from the net. It’s a lot faster since you don’t have to render anything and it’s ready-toexport to your printer. The second, yet more customizable way is to hire a 3D-modeller to create a 3D model for you. If you’d like to model yourself you can try applications like autocad, solidworks, and rhino3d.