As a general play-style: Laid back CS approach. Avoid severe pushing to be safe from ganks. Wards or clairavoyance/map-awareness related skills required when pushing. Harass the opponent when it is available, but not at the expense of several creep farm.
If the opponent is getting more CS, I request a gank. If I am getting owned, I request a gank. If nothing works, I failed and should play better next time or itemize differently (or I should consider champion match-ups). Switches are okay, but not really that useful in most 'getting owned' situations.
Avoid going in 1v1. Avoid engaging when the locations of enemy champions are unknown. Always consider the locations of champions like Shen, Nocturne, T.F., Twitch, Shaco, Eve, etc. who can have long-distance travelling or stealth.
I prefer to skype in premade.
Thanks Rin! <333