As varus, Focus on poking down the opposition with your Q and W. It should be pretty easy for you once you slow them down with your E.

You are highly immobile so it should be important for you to take some countermeasures against ganks. Ward around the lane and keep the wave on your side when possible.

Farm a lot and get your core items quickly. This will help you get kills and burst down enemies with your obnoxious Q damage.         As varus, Focus on the bottom of the opposition with your Q and W. It should be easy enough for you once you slow down with your E. You are very still so it should be important for you to take some countermeasures against the ganks. Ward around the track and keep the wave on your side whenever possible. Close a lot and get your basic items quickly. This will help you get killed and bursting enemies with your heinous Q damage.