How to make a part spawn directly below player?

I'm making an ice trail which spawns on the players leftlowerleg (the ice trails is an instance of both a part and a particle), but I'm having a problem with getting it directly below the leftlowerleg, instead it decides to spawn behind the leg and I'm not sure how to fix this. Here's a video to show it, and my code: https://gyazo.com/c1c72e68015ed43982228d1ccea61fe2

TrailEvent.OnServerEvent:Connect(function(player)
	local Character = player.Character
	local leftLeg = Character:FindFirstChild("LeftLowerLeg")
	local h = Character.Humanoid
	h.WalkSpeed = 50
	while h.MoveDirection ~= Vector3.zero do
		local Trail = Instance.new("Part")
		local Particle = Instance.new("ParticleEmitter")
		local colorKeypoints = {
			ColorSequenceKeypoint.new( 0, Color3.new(0.607843, 0.760784, 1)),  
			ColorSequenceKeypoint.new(.5, Color3.new(0.705882, 0.839216, 1)), 
			ColorSequenceKeypoint.new( 1, Color3.new(1, 1, 1))   
		}
		local numberKeypoints2 = {
			NumberSequenceKeypoint.new(0, 0);  
			NumberSequenceKeypoint.new(1, 10); 
		}
		Particle.Parent = Trail
		Particle.Color = ColorSequence.new(colorKeypoints)
		Particle.LightInfluence = 1
		Particle.Texture = "rbxassetid://3916143220"
		Particle.Transparency = NumberSequence.new(0.5,0.5)
		Particle.Lifetime = NumberRange.new(2.5,2.5)
		Particle.Enabled = true
		Particle.Size = NumberSequence.new(numberKeypoints2)
		Particle.LockedToPart = true
		Particle.Speed = NumberRange.new(1,1)
		Particle.Rate = 8
		Particle.TimeScale = 1
		Trail.Transparency = 0.2
		Trail.BrickColor = BrickColor.new("Baby blue")
		Trail.Material = Enum.Material.Neon
		Trail.Size = Trail.Size + Vector3.new(4,0,10)
		Trail.Anchored = true
		print("left leg is moving")
		Trail.Parent = leftLeg
		Trail.Position = leftLeg.Position 
		wait()
	end
end)