Avery that is a beutiful sig. 9.5 /10
I agree you should add some text. But just make sure its not too big.
And I also think that if you use text you should maybe bring Sam's pic up more so that his head is closer to the top of the av thus showing more of his body for the text to go over. And I think if you bring his body up some more then you could maybe use bigger text than if you were to leave his picture where it is now and try to use text.
P.S. Great job on Color cordination of pic, background, and all around AV. And lastly great picture of Sam expressing his emotion.