How do you rotate a brick like upwards when you're using weld?

Player = game.Players.LocalPlayer
Character = Player.Character
Mouse = Player:GetMouse()
function Equip(key)
	if key == "q" then
		Part = Instance.new("Part")
		Part.Parent = Character
		Part.FormFactor = "Custom"
		Part.Size = Vector3.new(1.54, 0.2, 0.2)
		Part.BrickColor = BrickColor.new("Medium stone grey")
		Part.TopSurface = "Smooth"
		Part.BottomSurface = "Smooth"
		Part.CanCollide = false
		Part.CFrame = CFrame.Angles(0, 0, 0)
		Part:BreakJoints()
		Weld = Instance.new("Weld",Character)
		Weld.Part0 = Weld.Parent["Right Arm"]
		Weld.Part1 = Part
		Weld.C1 = CFrame.Angles(0, 1.5, 0) *CFrame.new(0, -5, 1.2)
	end
end
Mouse.KeyDown:connect(Equip)

Basically just started learning some lua and learned weld. But how do you rotate the brick upwards? I know you can use CFrame.Angles to rotate it, but it never semmed to rotate upwards? just right or left!