Try using the magic wand tool to select the siloettes, then add to the selection (on the menu its a picture of a square joined to another) the bits that arent quite black, the bits contrast or brightness missed, then copy this onto a new layer, go to blending mode, colour overlay, black, this will get rid of the slight few things you missed
Other than that nice work
PS By things you missed - I meant how the scarf is really dark and not needed