Last hit with q, tower hug, and if your 2v1 top your jungle better not be ******ed or gg, also its VERY hard to get out farmed in a 1v2, your gaining nearly 2x exp and even in a perfect world were their both getting 50 50 ;last hits on the ENTIRE creep wave, you only have to kill HALF to keep up with them, and a few tips with annie, take e around level 5-7 (NOT 6) and use it to build a stack for stun in a pinch, use tibbers+stun when they bunch up, tibbers on a solo enemy is usually not worth it, also remember to control tibbers with alt+click, not many champs are to keen on chasing you when tibbers is in they face in the early to mid game(aoe burn and his melee hurts), also when the laning phase end and it gets to the team fighting keep killing creep (go lane when theirs nothing happening but dont push anymore just equalize the lanes) and run though the jungle killing **** when the jungler doesnt need it anymore, also STAY THE **** AWAY FROM VEIGAR, if their is a team fight when him in it don't get anywhere near him and ask your allies to cc the **** outa him.
thats all i can think of for now.