Ok, I looked closer, I see the perspective issue. You have the lantern directly below the hand. Thus the shadow of the arm will be on the ceiling. The hand is not closed, thus the light showing inside the hand where you don't want it. Also, the lantern is directly below the arm, which means no highlight shadow on the arm. Get used to it, Bryce is realistic and you have a realistic scene. If you want to change it, close the hand, move the lantern closer to the front (use a side view to see the perspective). Also, looks like you have the light too bright, turn down the intensity just a bit. As for no shadow on the top of the lantern, that's your sun control. Dump the sun. Give it black all the way around in the skylab. Change skies if you need to. I think they are interfering with the image. By the way, if you did put shadows where you want them, it would look wierd (but maybe that's what you want). Oh, if you turn down the lighting and shift the lantern slightly to the front, you'll pick up a shadow line around the lower part of the arm.