At the very start, you can either give your jungler a sweet leash or invade and pick up some kills. At the very sgart you want to tell your adc to rush lvl 2 in order to potentially get rid off enemy summoner spells or pick up a kill or two. Depending on enemy botlane comp, you can just fly in at lvl 6 or wait for them to come in and try to turn it. Whenever you get your warding item, tell your adc, ill be back. Ward all bushes you can, use control wards, take trips to enemy jungle and use ur wards there as well. Basically ward, ward and ward. Roam mid at lvl 5-7 if you're doing fine in botlane.