Problem with tweening

Hello! Im trying to make a textlabel cover the entire screen and go outside of it. I want to tween this to make an effect like the label is jumping right at you. Here is my code for some reason it looks strange.

script.Parent["321go"].OnClientEvent:Connect(function()
	local label = script.Parent.Event
	label.Visible = true
	label.TextColor3 = Color3.fromRGB(255, 2, 0)
	label.Text = "3"
	game.Workspace["3 2 1 go! SFX"]:Play()
	wait(1)
	label.TextColor3 = Color3.fromRGB(237, 235, 0)
	label.Text = "2"
	wait(1)
	label.TextColor3 = Color3.fromRGB(32, 47, 237)
	label.Text = "1"
	wait(1)
	label.TextColor3 = Color3.fromRGB(0, 237, 79)
	label.Text = "Go!"
	local tweenservice = game:GetService("TweenService")
	label:TweenSizeAndPosition(UDim2.new(1, 0, 1, 0), UDim2.new(0,0,0,0), Enum.EasingDirection.InOut, Enum.EasingStyle.Bounce, 0.05)
	wait(0.2)
	label.Visible = false
	game.Players.LocalPlayer.Character.Humanoid.WalkSpeed = 18
	
end)

Recommended you learn about cos and sin