I used weld, how do you rotate the brick?

Player = game.Players.LocalPlayer
Character = Player.Character
Mouse = Player:GetMouse()
run = game:GetService('RunService')
RS = Character.Torso["Right Shoulder"]
enabled = true
function onkey(key)
	if key == "r" and enabled == true then
		for i = 1, 10 do
		RS.C0 = RS.C0*CFrame.fromEulerAnglesXYZ(0, 0, 0.16)
		enabled = false
		end
		Hand = Instance.new("Part", Character)
		Hand.FormFactor = "Custom"
		Hand.CanCollide = true
		Hand.Size = Vector3.new(0.2, 2.57, 0.42)
		Hand.BrickColor = BrickColor.new("Black")
		Hand.CFrame = Character.Torso.CFrame*CFrame.new(0, 4, 4)
		Hand.CFrame = CFrame.fromEulerAnglesXYZ(0, 1.5, 0)
		Weld = Instance.new("Weld",Character)
		Weld.Part0 = Weld.Parent["Right Arm"]
		Weld.Part1 = Hand
		Weld.C1 = CFrame.fromEulerAnglesXYZ(0, 0, 0) *CFrame.new(0 , 1.5 , 0)
		
		
	end
end
function Slash()
	for i =1, 12 do
	RS = Character.Torso["Right Shoulder"]
	RS.C0 = RS.C0 *CFrame.fromEulerAnglesXYZ(0, 0, 0.16)
	run.Stepped:wait()
	end
	for i =1, 12 do
	RS = Character.Torso["Right Shoulder"]
	RS.C0 = RS.C0 *CFrame.fromEulerAnglesXYZ(0, 0, -0.16)
	run.Stepped:wait()
	
	end
end

Mouse.Button1Down:connect(Slash)
Mouse.KeyDown:connect(onkey)

I'm trying to make a sword...

However, I do not come very far due to me being newbeginner in Lua and don't know to rotate it? I know CFrame.Angles works but it didnt for me..

local Player = game.Players.LocalPlayer
local Character = Player.Character
local Mouse = Player:GetMouse()
local run = game:GetService('RunService')
local RS = Character.Torso["Right Shoulder"]
enabled = true
function onkey(key)
    if key == "r" and enabled == true then
        for i = 1, 10 do
        local RS.C0 = RS.C0*CFrame.fromEulerAnglesXYZ(0, 0, 0.16)
        enabled = false
        end
        Hand = Instance.new("Part", Character)
        Hand.FormFactor = "Custom"
        Hand.CanCollide = true
        Hand.Size = Vector3.new(0.2, 2.57, 0.42)
        Hand.BrickColor = BrickColor.new("Black")
        Hand.CFrame = Character.Torso.CFrame*CFrame.new(0, 4, 4)
        Hand.CFrame = CFrame.fromEulerAnglesXYZ(0, 1.5, 0)
        Weld = Instance.new("Weld",Character)
        Weld.Part0 = Weld.Parent["Right Arm"]
        Weld.Part1 = Hand
        Weld.C1 = CFrame.fromEulerAnglesXYZ(0, 0, 0) *CFrame.new(0 , 1.5 , 0)
for i = 1, 2 do
			for i = 1, 12 do
				Hand.C0 = Hand.C0 *CFrame.Angles(0, 0, -0.16)
				Hand.C0 = Hand.C0 *CFrame.Angles(0, 0, 0.16)
				Hand.C0 = Hand.C0 *CFrame.Angles(0, 0.1, 0)
				Hand.C0 = Hand.C0 *CFrame.Angles(0, -0.1, 0)
				Run.Stepped:wait(0.01)
			end
			for i = 1, 12 do
				 Hand.C0 = Hand.C0 *CFrame.Angles(0, 0.1, 0)
				 Hand.C0 =  Hand.C0 *CFrame.Angles(0, -0.1, 0)
				 Hand.C0 =  Hand.C0 *CFrame.Angles(0, 0, 0.16)
				 Hand.C0 =  Hand.C0 *CFrame.Angles(0, 0, -0.16)
				Run.Stepped:wait(0.005)
			end
		end
			for i = 1, 12 do
				 Hand.C0 =  Hand.C0 *CFrame.Angles(0, 0, -0.16)
				 Hand.C0 =  Hand.C0 *CFrame.Angles(0, 0, 0.16)
				 Hand.C0 =  Hand.C0 *CFrame.Angles(0, 0.1, 0)
				 Handr.C0 = Hand.C0 *CFrame.Angles(0, -0.1, 0)
				Run.Stepped:wait(0.005)


    end
end
function Slash()
    for i =1, 12 do
    RS = Character.Torso["Right Shoulder"]
    RS.C0 = RS.C0 *CFrame.fromEulerAnglesXYZ(0, 0, 0.16)
    run.Stepped:wait()
    end
    for i =1, 12 do
    RS = Character.Torso["Right Shoulder"]
    RS.C0 = RS.C0 *CFrame.fromEulerAnglesXYZ(0, 0, -0.16)
    run.Stepped:wait()

    end
end

Mouse.Button1Down:connect(Slash)
Mouse.KeyDown:connect(onkey)

what i put in the Frames you can put any number if you know what a Cframe is but feel free to ask ( this is not going to rotate it it is just a example of numbers you can put to rotate)