Player following his cursor in GUI ?

So far i have this

--Services
local RunService		= game:GetService('RunService')
local UserInputService	= game:GetService("UserInputService")

--Localize
local instance,newRay	= Instance.new,Ray.new
local v2,v3,cf,udim2	= Vector2.new,Vector3.new,CFrame.new,UDim2.new
local insert,random,abs	= table.insert,math.random,math.abs


local Player			= game.Players.LocalPlayer
local Character			= Player.Character or Player.CharacterAdded:Wait()


--Basic setup
local ViewPort			= script.Parent.ViewportFrame

--Settings
local Offset			= cf(0,1,-6)

--Create the viewport camera

local Camera		= instance("Camera")
	ViewPort.CurrentCamera	= Camera

local ValidClasses = {
	["MeshPart"] = true; ["Part"] = true; ["Accoutrement"] = true;
	["Pants"] = true; ["Shirt"] = true;
	["Humanoid"] = true;
}

local function RenderHumanoid(Model, Parent, MainModel)
	local ModelParts = Model:GetDescendants()
	for i=1, #ModelParts do
		local Part		= ModelParts[i]
		
		if ValidClasses[Part.ClassName] then
			
			local a			= Part.Archivable
				Part.Archivable	= true
				
			local RenderClone	= Part:Clone()
				Part.Archivable	= a
		
			if Part.ClassName == "MeshPart" or Part.ClassName == "Part" then
				PartUpdater = RunService.Heartbeat:Connect(function()
					if Part then
						RenderClone.CFrame = Part.CFrame
					else
						RenderClone:Destroy()
						PartUpdater:Disconnect()
					end
				end)
			elseif Part:IsA("Accoutrement") then
				PartUpdater = RunService.Heartbeat:Connect(function()
					if Part then
						if RenderClone.Handle then
							RenderClone.Handle.CFrame = Part.Handle.CFrame
						end
					else
						RenderClone:Destroy()
						PartUpdater:Disconnect()
					end
				end)
			elseif Part.ClassName == "Humanoid" then
				--Disable all states. We only want it for clothing wrapping, not for stupid @$$ performance issues
				RenderClone:SetStateEnabled(Enum.HumanoidStateType.FallingDown,			false)
				RenderClone:SetStateEnabled(Enum.HumanoidStateType.Running,				false)
				RenderClone:SetStateEnabled(Enum.HumanoidStateType.RunningNoPhysics,	false)
				RenderClone:SetStateEnabled(Enum.HumanoidStateType.Climbing,			false)
				RenderClone:SetStateEnabled(Enum.HumanoidStateType.StrafingNoPhysics,	false)
				RenderClone:SetStateEnabled(Enum.HumanoidStateType.Ragdoll,				false)
				RenderClone:SetStateEnabled(Enum.HumanoidStateType.GettingUp,			false)
				RenderClone:SetStateEnabled(Enum.HumanoidStateType.Jumping,				false)
				RenderClone:SetStateEnabled(Enum.HumanoidStateType.Landed,				false)
				RenderClone:SetStateEnabled(Enum.HumanoidStateType.Flying,				false)
				RenderClone:SetStateEnabled(Enum.HumanoidStateType.Freefall,			false)
				RenderClone:SetStateEnabled(Enum.HumanoidStateType.Seated,				false)
				RenderClone:SetStateEnabled(Enum.HumanoidStateType.PlatformStanding,	false)
				RenderClone:SetStateEnabled(Enum.HumanoidStateType.Dead,				false)
				RenderClone:SetStateEnabled(Enum.HumanoidStateType.Swimming,			false)
				RenderClone:SetStateEnabled(Enum.HumanoidStateType.Physics,				false)
			end
			
			RenderClone.Parent = Parent
		end 
	end
end


--Let the world load before starting
wait(1)


local function Render()
	ViewPort:ClearAllChildren()
	--Render the character
	local Char = instance("Model")
		Char.Name = ""
		Char.Parent = ViewPort
	RenderHumanoid(Character,Char)
end

--Handle changes
Character.DescendantAdded:Connect(Render)
Character.DescendantRemoving:Connect(Render)

--Initialize
Render()

CameraUpdater = RunService.Heartbeat:Connect(function()
	if Character.HumanoidRootPart then
		Camera.CFrame =  cf(Character.HumanoidRootPart.CFrame:toWorldSpace(Offset).p, Character.HumanoidRootPart.CFrame.p)
	end
end)

it looks like this https://i.gyazo.com/18b3089175c61140dd5a5238b2134a2b.mp4 but i need player's face to follow the mouse in gui is there any way ?