Improving ADC Skills

Ok. Here's what I can come up with that might help you improve:

Tips for CS:

Predicting when to last-hit and when to harass: Practice watching the whole minion wave and try to predict when each minion will die. The better you get at this the better you will be able to CS at just the right time. It helps to watch your own minions for this too because then you know when the enemy will be busy farming and cannot trade/harass you as easily.

last hitting under turret: If you haven't learned how to last hit under tower, you'd best do so. This will allow you to keep up when your opponent is ahead and tries to push into your tower to cost you farm. I don't remember the numbers exactly, but there should be plenty of resources available with a quick internet search. It's something like 2 tower hits on caster minion and 3 on melee minions to put them last-hit HP range. Sometimes you have to prepare them with 1 auto to get the right ratios.

Freezing the lane: Learn how to freeze the lane, keeping the minion waves pushed closer to your tower. It gives you a lot of power to farm more safely and zone the enemy away from their farm. To freeze, don't clear the minion wave unless it is about to push into tower. Focus on only last hitting, and don't damage the minions unnecessarily. If you are ahead you will zone the enemy, if you are behind you will keep the minion wave close to you so that you can farm without getting zoned away from it.

How to CS safely: If you are behind, play safer. Stand back away from the minion wave, only step forwards when you have to to CS, then immediately walk away and out of range again. This will keep you out of reach from your opponents for a larger % of the time, thus keeping you healthy and in lane longer, giving you a better chance to farm and regain a lead.

On getting ahead in lane:

Track your opponent's strength: Check the scoreboard whenever you have free time (recalling / walking back from base) and Look at your opponent's CS, items, and level. You can use this to predict if you are stronger than them or not. You want to trade and fight more when you are ahead, and avoid trades and fights when behind.

Punish your opponent for farming: Whenever your minions are low health, you know the opponent will try to CS, so walk forward and attack them from range. They won't be able to fight back because their character is already in the process of attacking something else. Eventually you don't even have to attack them, just being close to the minion wave will scare them into staying back and keep them from farming. THIS DOES NOT WORK IF YOU ARE BEHIND

On going for kills: You don't have to kill your lane opponent to get ahead. If you have a close call but don't quite get it, just push the wave into their tower and don't waste summoners for a kill. It is slower lead growth, but it is also more reliable and safer. You will get more farm and XP while they miss both. If they stay while low health, you can likely harass them more or even tower dive to finish the kill. Also keeping your summoner spells for saving yourself can be important because if you die you could lose your lead.

When to recall to base:

The same time as your opponent: If you are even with your opponent and you both have enough gold to buy big items, try to recall at the same time they do. If you stay in lane and farm then they may come back with an item lead on you and be able to kill you or push your tower in after you recall.

On staying in lane with low HP: Never stick around when you are low health, dying takes a lot longer to return to lane than recalling. Waiting around risks you getting killed and then having the lane pushed in and your tower hit. You will miss more CS and XP if that happens.

recalling during the cannon wave: Sometimes it is actually best to recall while the cannon minion wave is coming into lane because even if your opponent pushes into tower the cannon will absorb more tower shots and give you more time to return to lane and last-hit the rest of the minion wave under tower.