Making 3D2D HUD move with player

[MexicanR]

I'm making a HUD for my gamemode and I want it to slightly move on the screen when the player moves. Like the HUD in Halo moves when you run. Here is my current code:

hook.Add( "PostDrawHUD", "3d2d", function()
	--Local Variables--
	local ply = LocalPLayer()
	local health = ply:Health()
	local pos = EyePos() + EyeAngles():Forward() * 10 + EyeAngles():Right() * -6 + EyeAngles():Up() * -4
	local ang = EyeAngles()
	local hud = { "CHudHealth", "CHudBattery", "CHudAmmo", "CHudSecondaryAmmo" }

	--Rotation--
	ang:RotateAroundAxis(EyeAngles():Up(), -90)
	ang:RotateAroundAxis(EyeAngles():Right(), 70)
	ang:RotateAroundAxis(EyeAngles():Up(), 10)

	--3D2D Start--
	cam.Start3D()
	cam.Start3D2D( pos, ang, 0.20 )
	draw.RoundedBox( 0, -50, -50, 400, 50, Color( 25, 25, 25, 155 ) )
	draw.DrawText( "HP ", "DermaDefault", -50, -50, Color( 255, 255, 255 ) )
	draw.RoundedBox( 0, 30, ScrH() - 70, 300 * ( math.Clamp( ply:Health(), 0, 100 ) ), 30, Color( 255, 0, 0 ) ) --Health Bar
	cam.End3D2D()
	cam.End3D()
end)

hook.Add( HUDShouldDraw, DHudHide, function( name )
	if table.HasValue( hud, name ) then return false end
end)

Currently I have no code implemented to do the above but I'm pretty sure this [img]http://wiki.garrysmod.com/favicon.ico[/img] [url=http://wiki.garrysmod.com/page/Global/Lerp]Lerp[/url] would aid in that process.