They do have Mods/Cheats for that, aiming reticle. However, I really don’t find archery that hard. Its a bit different in combat, but I did a competition at one of the ranges and hit 13 bullseyes in a row, kinda surprised myself. Admittedly, its a lot different in combat aiming at moving targets. But, even in combat the targets are large and they really dont try to evade shots, i.e. the enemy travels in a straight consistent line.
Playing chumps, and competing at the archery ranges definitely helps with accuracy. Chumps, helps with finding range and the targets help with overall accuracy. the mechanics aren’t arbitrary, from the arrow point the trajectory is consistently off left. You can pretty much count on that and adjust your aim. And I think, think is the operative word, if your release right when you’ve reached the limit of your draw it improves accuracy. I am not positive about the last though. I like playing archer too, and my only gripe is the the sloooow draw. if your on foot the most shots you can get off is two maybe three before your have to run or fight in melee.
Other thoughts: I play a lot of warband multiplayer and as an archer or crossbowman you’re aiming at moving targets and a player that does not travel (actually a player who is aware they’re being targeted and move in an inconsistent manner to disrupt aim) in a straight line. So, you have to estimate and shoot where you think the target is going to be. I think that bit of experience helps me with archery in this game. Especially, in the beginning when the bow moves a lot.