How do you make a Particle Emitter that is placed in the character's torso when they enter the game?

I am trying to make a Particle Emitter trail script that adds a Particle Emitter to the character's torso when they enter the game, but my way of scripting it will not work.

This is what my script looks like:

game.Players.PlayerAdded:connect(function(plr)
	local plrName = plr.Name
	plr.CharacterAdded:connect(function(char)
		local plrTorso = char:WaitForChild("Torso")
		plrTorso:connect(function(Trail)
			local sTrail = Instance.new("ParticleEmitter")
			sTrail.Name = "TrailTest"
			sTrail.Parent = plrTorso
		end)
	end)
end)

Can anyone help my with this, it will be vary much appreciated!