Welding Obejcts to Players?

how do i weld parts to a player like in his arm to make a shoulder pad

Here a simple thing for made a weld with a part ! Don't forgot to read the comment for more information or you can go on Roblox wiki here Enjoy !

local player = game.Players.LocalPlayer
local character = player.CharacterAdded:wait() or workspace[player.Name]

spawn(function() -- dont forgot that if you want it work !
	local part = Instance.new("Part", workspace)
	local weld = Instance.new("Weld", part)
	weld.Part0 = part --Attach to Part1
	weld.Part1 = character["Left Arm"] --Attack to Part0
	weld.C0 = CFrame.new(0, 0, 0) *CFrame.new(0, 0, 0) -- Position your Part !
end)

part = Instance.new("Part", workspace)
weld = Instance.new("Weld", part)
weld.Part0 = part
weld.Part1 = workspace.Player["Left Arm"]

Copy that, put it in the command line, play your game in studio, then run the command.