how do i clone my self with a key?'

I highly assume that you want that clone to be replicated. So here's my answer:

Stage 1 - Setup

• Put a RemoteEvent called "PlayerClone" in ReplicatedStorage

• Put a LocalScript called "CloneHandler" in StarterCharacterScripts located in StarterPlayer

• Put a Script called "CloneStarter" in ServerScriptService

Stage 2 - LocalScript

--[ Configuration ]--
Key = Enum.KeyCode.Q
Interval = 0.5 --> Put 'false' if you don't want a delay between each clone, otherwise intervals are counted in seconds.


--[ Core Script ]--
PlayerClone = game.ReplicatedStorage.PlayerClone
UIS = game:GetService("UserInputService")
Waiting = false

UIS.InputBegan:Connect(function(KeyPressed)
	
	if not Interval then
		
		Interval = 0
		
	end
	
	if not Waiting then
		
		Waiting = true
		
		--
		
		if KeyPressed.KeyCode == Key then
				
			print('Fired!')
			PlayerClone:FireServer()
				
		end
		
		--
		
		wait(Interval)
		
		Waiting = false
		
	end
	
end)

Stage 3 - Script

--[ Core Script ]--
PlayerClone = game.ReplicatedStorage.PlayerClone

PlayerClone.OnServerEvent:Connect(function(plr)
	
	print('Got Signal!')
	
	local function Clone(plr)
		
		local Player = Instance.new('Model')
		Player.Parent = plr.Character.Parent
		Player.Name = plr.Name
		
		for _, object in pairs(plr.Character:GetChildren()) do
			
			local _ = object:Clone()
			_.Parent = Player
			
		end
		
	end
	
	Clone(plr)
	
	
end)

You're done!