AddPlayerPacket

Hi,
Today I played a little bit with the AddPlayerPacket. I successfully added
my Skin with an item in his hand to my world.

Is it possible to add a skin from a folder in my plugin? And can I make the skin move his hat?
(The hat should follow a near player)
Something like this:

PHP:

if($npc->distance($player)<=10)
{
$npc->look($player);
}


I added the Item with:

PHP:

$pk->item = Item::get(276);