You've captured the poignancy and melancholy of the Picasso original, but since we know the Snarry back-story it is even more evocative. Severus, in his guise as the double-agent, has to bend himself into all sorts of positions, just as the acrobat does. Harry has always been at the whims of the expectations of his friends and the general public, just as the Harlequin is in the commedia dell' arte. Both are forced to put on masks over their own emotions to perform their tasks, which makes their own sadness that much more painful.