Honestly, I'm a little puzzled by your struggle with Archery. I'm only on my first playthrough, (but it's been a really long one), and I only use a bow. Like ever. and I've never had much trouble at all. I suppose at this point you've gotten to learn the tactics of an Archer; Maneuvers, strategies, effectiveness. Might I suggest, because I used it for quite a while, and it will definitely help you while you figure out what will best help improve your effectiveness in Archery. Pick up Faendal, the Archer to follow you. Depending on your level, that is; if you're above level 30 then you should probably go for Durak, the Dawnguard crossbow user, or, if you would prefer a magic using follower get a good one and give them some good gear. I don't mention melee because what will happen is they will charge to attack, and very easily and frequently get in your line of sight/fire, making it very easy to accidentally hit and/or kill them. Next, again depending on your level, Meeko the Dog is good for a while, or get a Dawnguard dog or a death hound. Some people don't like followers, but they are VERY helpful as a progressing archer, because what happens, is, as you approach your enemy(ies), your dog will charge, and gain the full attention of the enemy(ies), allowing you and a ranged follower (archery or magic) to attack the enemy(ies) while they're distracted. This is also effective to sneak and get in critical hits before you are spotted, by which time he should be well on his way under. Also, the enemy will normally attack the dog until he is in last stand mode, then your follower, who will normally be closer than you, until he/she is in last stand mode, then you. This gives you a considerable amount of time to take him down. I am able to use this tactic wearing heavy armor and very limited sneak perks, so that would be ideal. Only because if the enemy has not fallen by the time he targets and attacks you, you'll definitely need the adequate protection to defend yourself while you finish him off, or wait for the others to distract him again. A heavy armored archer is a relatively unorthodox way to play, but it can be very effective if you do it right. I hardly ever need to use potions even, and never use healing spells, unless it is, by default, a significantly strong opponent, a boss of some sort. So, this is the advice given from a committed archer. If it works for me, it can work for you. Shoot on, my Patowan.