Good idea. I feel like the contrast isn't it's best in this picture, I almost missed the arm completely. The tinting doesn't help much and I think you could have used brighter lighting. Good effort!
I would have liked a little more contrast or better focus on the arm, to make it stand out from the wall. As it is, the photo looks a bit flat. And with the title, I would have liked to see the hand - its sort of intrinsic to the gesture of taking an oath. Nice idea for the challenge.
I suppose it is close enough to a right angle. But it isn't very interesting. It would perhaps portray the intended subject better if the background was more suggestive of a courtroom than a living room (preferably showing a bench with a gavel, but at least wood paneling). And the attached hand should really be included.
Don't understand the meaning of the pic's Title. The picture is not interesting and the lighting is terrible. The wall for a background isn't too good either. Other then that I really like it. :D