There are a few things you can do to help sell your 3D models online. First, be sure to create versions of your model that don’t require external plugins. This will make your file easier to navigate and viewer, and it will look more professional. Another thing you can do is prepare your file with lights and cameras. Not only will this give your model a more polished appearance, but it will also show potential buyers what the finished product looks like. Finally, be sure to list the polygon and vertex counts for your 3D model. This will give buyers an idea of how complicated the project is and whether they have the necessary hardware or software to view and work with it.