How would I properly tween and fade?

I've tried the fading several different ways, but it just pops away. Like I destroy it before the fade.

Also, the tweening, it's not smooth. It just pops like I changed the Visible property

a = game.Lighting.Welcome_GUI

game.Players.PlayerAdded:connect(function(p)
	p:WaitForChild("PlayerGui")
	a:clone().Parent = p.PlayerGui
	wait(2)
	p.PlayerGui.Welcome_GUI.ImageLabel:TweenPosition(UDim2.new(0,0,0,0),"Out","Quad",.99)
	repeat
		p.PlayerGui.Welcome_GUI.ImageLabel.ImageTransparency = p.PlayerGui.Welcome_GUI.ImageLabel.ImageTransparency + 0.1
		wait(0.01)
	until
	p.PlayerGui.Welcome_GUI.ImageLabel.ImageTransparency == 1
	p.PlayerGui.Welcome_GUI:Destroy()
end)

a = game.Lighting.Welcome_GUI:Clone()

game.Players.PlayerAdded:connect(function(p)
	p:WaitForChild("PlayerGui")
	a.Parent = p.PlayerGui
	g = p.PlayerGui.Welcome_GUI
	wait(2)
	g.ImageLabel:TweePosition(UDim2.new(0,0,0,0), "Out", "Quad", 1)
	for i = 1,10 do
		wait(.1)
		g.ImageLabel.Transparency = g.ImageLabel.Transparency +.1
	end
	g:Destroy()
end)

I think this should work.