How do I give a custom nametag to the developers of a game?

This is the code that goes in a LocalScript inside of StarterCharacterScripts

for _, player in pairs(game.Players:GetPlayers()) do
		a = Instance.new("BillboardGui", player.Character.Head)
			a.Size = UDim2.new({0, 200},{0, 50})
			a.LightInfluence = 0
			a.MaxDistance = 50
			a.StudsOffset = Vector3.new(0,1.4,0)
			a.Size = UDim2.new(0, 200, 0, 50)
		b = Instance.new("TextLabel", a)
			b.BackgroundTransparency = 1
			b.BorderSizePixel = 0
			b.Font = "Legacy"
			b.TextColor3 = Color3.new(255,255,255)
			b.TextSize = 10
			b.TextStrokeTransparency = 0
			b.TextYAlignment = "Top"
			b.Text = player.Name
			b.Size = UDim2.new(0, 200, 0, 50)
end
for _, player in pairs(game.Players:GetPlayers()) do
	if player.UserId == 391034812 then
		   	b.Text = "†shovah†"
			b.Font = "Bodoni"
			b.TextSize = 20
	end
end
	for _, player in pairs(game.Players:GetPlayers()) do
	if player.UserId == 76808471 then
		   	b.Text = "†orua†"
	end
end
	for _, player in pairs(game.Players:GetPlayers()) do
	if player.UserId == 14731493 then
		   	b.Text = "†ethan†"
	end
	end

When I use this, it gives the rank to random players, instead of the developers, how do I fix this?

###You're better off doing this in a PlayerAdded event. This will allow us to check if a player is an admin without looping.

local admins = { -- table of admins. place user ids here
    [game.CreatorId] = true,
    [391034812] = true,
    [76808471] = true,
    [14731493] = true
}

game:GetService("Players").PlayerAdded:Connect(function(plr)
    plr.CharacterAdded:Connect(function(char) -- wait for character to load
       if admins[plr.UserId] then
            local a = Instance.new("BillboardGui") -- use local variables
            a.Size = UDim2.new(0, 200, 0, 50) -- you gave this table values
            a.LightInfluence = 0
            a.MaxDistance = 50
            a.StudsOffset = Vector3.new(0,1.4,0)
            a.Size = UDim2.new(0, 200, 0, 50)
            a.Parent = char.Head -- assign parent last

            local b = Instance.new("TextLabel")
            b.BackgroundTransparency = 1
            b.BorderSizePixel = 0
            b.Font = Enum.Font.Legacy -- Use enums, makes things faster
            b.TextColor3 = Color3.fromRGB(255,255,255) -- use RGB values 
            b.TextSize = 10
            b.TextStrokeTransparency = 0
            b.TextYAlignment = Enum.TextYAlignment.Top 
            b.Text = player.Name
            b.Size = UDim2.new(0, 200, 0, 50)
            b.Parent = a
       end
    end)
end)

###On a side note, the parent argument to Instance.new is deprecated and should not be used in new work, it also lags more. Read more on that here