How To Make Character Customization Transfer

I want the player’s character to be sent to the main game when they click play. They can customize their character, but when they click play, it should send their character to the main game. I don’t know how to use MessagingService to do this, though.

  1. I need to use messaging service but I don’t know how.

3.I have tried many solutions: Advanced Roblox Scripting Tutorial #34 - MessagingService (Beginner to Pro 2020) - YouTube, NotificationService, Cross-Server Messaging

game code that I need to adapt:

local BUTTON_FUNCTIONS = {
	Customize = function()
		states:SetAttribute("ActiveComponent", "Customization")
		
		TweenService:Create(currentCamera, TweenInfo.new(2), {
			CFrame = workspace.CCCameraPart.CFrame
		}):Play()
		
		module:Unrender()
	end,
	Gamemodes = function()
	
	end,
	Start = function()
		game:GetService("TeleportService"):Teleport(10488785483)
	end
}

Please do not ask people to write entire scripts or design entire systems for you. If you can’t answer the three questions above, you should probably pick a different category.