When you start the match, ask for a leash in the blue buff (Blue Sentinel), because warwick has mana problems early game. After you get the blue buff, clear all the jungle camps before leaving to base and buy. Try to get the Devourer enchantment as soon as you can, as you will have to stay in the jungle to get the stacks you need for the Sated Devourer. Gank when your teammates ask for a gank. Kill dragon as soon as you buy your Devourer enchantment, you could try to solo it, because warwick's lifesteal makes it easy, but if you think you need help, ask for help.