Need help with ebay !?

hello i need to buy 7 hoodies from ebay i sent a message to the seller so he can combine the shipping for me he told me ok he gave me a price and told me give me ur paypal adress i gave him the paypal adress and sent me an invoice so i pay for the hoodies do i just have to pay or do i need to do something , will it be safe this is my first time please hlp iusually just click buy it now when i buy something and then pay with paypal pls help thanks