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 ?