The script doesn't make the part stick to the head ?

local area = Instance.new("Part", player.Character.Head)
	area.Size = Vector3.new(3.45, 3.34, 0.96)
	area.BrickColor = BrickColor.new("Medium stone grey")
	area.Anchored = false
	area.Transparency = 0
	area.CanCollide = false
	area.Shape = "Block"
	area.TopSurface = "Smooth"
	area.BottomSurface = "Smooth"
	area.CFrame = player.Character.Head.CFrame*CFrame.new(0,0,-0.8)
	local weld = Instance.new("Weld", area)
	weld.Part0 = area
	weld.Part1 =  player.Character.Head

There's a part and I made a weld to stick to the head but it keeps falling instead of going infront of my head..

Help please.

player = game.Players.LocalPlayer
Mouse = player:GetMouse()

Mouse.KeyDown:connect(function(key)
key = key:lower()
if key == "z" then
local area = Instance.new("Part", player.Character.Head)
    area.Size = Vector3.new(3.45, 3.34, 0.96)
    area.BrickColor = BrickColor.new("Medium stone grey")
    area.Anchored = true;
    area.Transparency = 0
    area.CanCollide = false
    area.Shape = "Block"
    area.TopSurface = "Smooth"
    area.BottomSurface = "Smooth"
local weld = Instance.new("Weld", area)
    weld.Part0 = area
    weld.Part1 =  player.Character.Head
    weld.C0 = CFrame.new(0,0,-.8);
	local mes = script.Mesh:Clone()
	mes.Parent = area
	local rot = script.Script:Clone()
	rot.Parent = area
	local par = script.ParticleEmitter:Clone()
	par.Parent = player.Character.UpperTorso
wait(); -- what you said to do 
area.Anchored = false;
for i = 1, 20 do
	mes.Scale = mes.Scale + Vector3.new(0.004,0.004,-0.00175)
	mes.Offset = mes.Offset + Vector3.new(0,0,-0.0375)
	wait(0.0)
end
wait(0.6)
mes.TextureId = 'rbxassetid://756808353'
for i = 1, 10 do
	mes.Scale = mes.Scale + Vector3.new(0.003,0.003,-0.002)
	mes.Offset = mes.Offset + Vector3.new(0,0,0.01)
	wait()
end
wait(0.4)
for i = 1, 10 do
	mes.Scale = mes.Scale + Vector3.new(0.02,0.02,0)
	mes.Offset = mes.Offset + Vector3.new(0,0,-0.5)
	area.Transparency = area.Transparency + 0.1
	wait()
end
par:remove()
	area:Remove()
	end
end)

look here is the full script I tried what you said but it didn't work...