My names Haydos and I'm and Annie player from OCE, I reached Diamond in S11 with a 65% winrate and going for masters this year. Hope this guide helps you out in your climb, feel free to leave a comment :)

:)

Early Game

In the early game we want to be making use of our large attack range and mostly getting the push on our enemy laner, gettting lvl 2 first and having lane freedom.

Once we get lvl 3 we can start looking for stun combos between enemy cooldowns, be cautious of mana, but with biscuit and your starter item it shouldn't be much of an issue. People often underestimate annies ability to kill early, if we can get some free combos off in the early game, an all in with ignite is almost always going to be a kill, dont underestimate your all in early.

Annie's lvl 6 is one of the strongest in the game, every game we should be looking for an all-in when we have our ultimate. Doing this at lvl 6 will almost always force the enemy to leave the lane and give you a gold lead, or better yet get a kill.

This is an example of the damage at lvl 6 in challenger
Play Video

Mid and Late Game

Once we get to the mid and late game we should always be looking for ways to influence the map whether that be by kills or objectives. I would always be shoving out whatever lane you're in and looking to roam by this stage.

Here are the main roaming paths:

Flash is the most important thing with Annies kit. We should be timing our flashes with major objective teamfights and not be wasting them on 1. surviving a kill that means very little and 2. Getting a kill that means nothing. Since flash is up every 5 mins (bit less with cosmic insight), I'd be looking to time flash with every single drag/baron fight, whether that be to get a multiple person stun or to get a valuable pick.

In this clip you will see me utilize the flash W tip as well as having flash available to set up an objective play (Baron was up and Drag < 1 minute): Play Video

Vision is a key aspect when utilizing Annie. Whenever there is an objective teamfight we should be looking for pockets of fog to surprise the enemy carries. Always bring scanner and (if you can) 1 control ward to each objective fight. Aim to be in these pockets about 30 seconds before the objective spawns, here are the places we should be utilizing with vision control, sitting in the bush and catching out enemy carries.

When walking out of base we should always be looking at the state of our lanes and discover roams from base (given mid wave is in a stable place or will be soon). With Annie being quite a low income champ we can recover from plenty of mistakes.

Using flash W is better in most cases than using flash R, W is instant so enemy cant react

Annie's standard lane combo is E>Q(stun)>W>AA

If you have tibbers active while doing an objective, use him to get vision on enemy players around the pit and to push them back

You can stun someone when you have just 2 stacks, all you have to do is E>Q>W(while Q is in the air) this will activate Q as the stunning ability and... yeah, stun them. This works with using any ability, doesnt have to be W (can even be R in extreme circumstances)

Sometimes Tibbers won't lock on to an enemy champion when you ult, be sure to press R again so that he wakes the fk up

Go dominate the rift bruz, chuck twitch a follow, leave a comment or whatever YEW https://www.twitch.tv/haydoslangg