Hi, GxMew. The plane object could be used by applying the image, with a 'default shader', to the plane's 'surface shader' input.
You'd also need to make a black/white opacity map to use in the default shader. You'll need PS for that, obviously, but you'll get the image into your actual scene that way, instead of having to postwork it in.
Use your magic wand, or polygonal selector in PS to select all the parts you want applied to the plane, colour this part white, then, right click and 'select inverse' with your magicwand selector, colour this part black. Save that as 'image-alpha'. This is then loaded into your default shader's 'opacity image', leave its settings at the defaults.
Applying images to TG planes is quite tricky sometimes, when you get it all nice and then change its size the image will not rescale with the plane. You can fix it but it's a lot of hassle.
You might want to use a plane.obj made in another 3d app'(any app' will do) and image-map it in there. Then just simply import the object into TG and re-apply the images, if you need to, with 'object UV' settings.
