Won let me make a mesh grow! Help?

The ring itself will not grow for some reason.

--// Edited for code block. In the future, please enclose your code inside of a code block.
UIS = game:GetService("UserInputService")
Player = game.Players.LocalPlayer

UIS.InputBegan:connect(function(Input, GPE)
    if Input.KeyCode == Enum.KeyCode.X and not GPE then
        game:GetService("Chat"):Chat(Player.Character.Head, "Killer Move:Serious Series...Serious Punch", "Red")
        animation = Player.Character.Humanoid:LoadAnimation(script.serious)
        animation:Play()
        wait(.5)
        ring = Instance.new("Part", workspace)
        ring.CanCollide = false
        ring.Anchored = true
        ring.FormFactor = "Custom"
        ring.Transparency = 0.1
        ring.Size = Vector3.new(8,8,8)
        ring.CFrame = Player.Character.Torso.CFrame * CFrame.new(0,2,-2)
        look = script.mush:Clone()
        look.Parent = ring
        for i=1,20 do
            look.Scale = look.Scale + Vector3(.2,.2,.2)
        end
    end
end)