How would I turn a message into a gui?

The Message will basically say the map has loaded but I want it into a gui way is that possible?

m = Instance.new("Message",workspace)
	m.Text = ""..string.upper(Environment.Name).." is Loaded. Enter when instructed." -- Edit this to whatever you want, or remove it
	wait(5)
	m:Remove()
	elseif Off then
		for _,v in pairs(Environment:GetChildren()) do
			if v:IsA("BasePart") then
			Select(v,"White")
			wait()
			v:Remove()
			end
		end
	wait(0.1)
	Environment:Remove()
	end
end