There are a few things you need in order to create a 3D figure in Photoshop. The first is the file name for the 3D figure, which you can find by opening Photoshop and looking in the File menu. The second is the layer name, which you can find under the Layer menu. The third is the size of the 3D figure, which you can find under the Size menu. Finally, you need to add a layer on top of the first two. This will be your 3D model.