How do I move this welded blade lower in my hand?

I'm new to this kind of thing, and I'm trying to change the position of the dagger in my off-hand to get lower. However I don't know how to change it's position.

https://gyazo.com/492e17b72df41f0794295a596d814692

local rp = game.ReplicatedStorage
local LeftArm = rp:WaitForChild("LeftArm")

game.Players.PlayerAdded:Connect(function(plr)
	plr.CharacterAdded:connect(function(char)
		local ClonedLA = LeftArm:Clone()
		ClonedLA.Parent = char
		ClonedLA.Grip2.CFrame = char:WaitForChild("Left Arm").CFrame
		
		local Weld = Instance.new("ManualWeld")
		Weld.Part0 = ClonedLA.Grip2
		Weld.Part1 = char:WaitForChild("Left Arm")
		Weld.C0 = ClonedLA.Grip2.CFrame:inverse() * char:WaitForChild('Left Arm').CFrame
		Weld.Parent = char:WaitForChild('Left Arm')
		
		end)
	end)