Check out the 3D drawing I did from a cool Java application Sweet Home 3D

This is approximately an hours work after following the tutorial and using an imported 2D floorplan. This isn't using the best quality rendering setting and I found my old P4 was struggling a little but still the result is OK.

Medium render quality 1024 pixels wide (Looks like a corrupted thumbnail... Will fix later.)

Best render quality 2048 pixels wide

Sweet Home 3D has a cool virtual walk-through feature. So if you're having trouble envisaging a plan and how furniture affects a space Sweet Home 3D really brings it alive.