The face giver part doesn't work when you click on it, why?

So basically, there's a with a Decal in it, and once you click it, it supposes to change your face to it, but for some reason, it doesn't work, I also added the sound and the ClickDetector, here's the script:

local head = script.Parent
local sound = head:findFirstChild("Victory")

function onClicked(part)
	local h = part.Parent:findFirstChild("Humanoid")
	if h~=nil then
sound:play()
if part.Parent:findFirstChild("Head"):findFirstChild("face").Texture == nil then return end
part.Parent:findFirstChild("Head"):findFirstChild("face").Texture=script.Parent.Decal.Texture
	end
end

script.Parent.ClickDetector.MouseClick:connect(onClicked)

Once you click on it, it supposes to play a sound [Which is located on the part] and put you on the face.

NOTE: I put the Decal, clickDetector & the Sound on the Part.