Bitcoin paper wallet and Bitcoincash withdrawal?
You will receive an equal amount of Bitcoin Gold as you have in your Bitcoin paper wallet at the time of the fork.  Your paper wallet that contains the Bitcoin will automatically contain the Bitcoin Gold.  In other words, your private key controls both.  We will have to wait to see which online wallets and exchanges support Bitcoin Gold in order to "split" Bitcoin Gold from Bitcoin to be able to withdraw or exchange them.  This is the same scenario as the BTC/BCH hardfork that occurred on Aug 1.