Guided / Multi is most common for PvP. It seems you have quite decent (compared to mine, it's godly) gear.
SKILLS
Firstly, with that gear, you will NOT need a valkyrie. I suggest putting no points into valkyrie.
Skills with base skill points to put in parenthesis:
Guided Arrow (20)--Despite only a +100% damage bonus at level 20, this skill should be maxed and is it your main attack skill.
Multishot (10)--Ten is really the most you should put. With +skill items, this goes up to more than enough arrows at once. In PvP, leech is a problem and unless you chug mana potions, multi can eat up your mana when you fire multishot. Read on, I do not recommend multi-shot for PvP anyway.
Critical Strike (20)--Obvious reasons, your guided arrow will deal double damage more often than not.
Penetrate (0-20)--This is completely personal preference. With Faith, you will not need any points here for PvM. Thus, this skill for you is strictly for PvP. If you fire multi-shot a lot in PvP, then perhaps putting points into this skill would help. If you like to spam guided (which I believe is much much much more effective in PvP), then put no points here as there is no use to more attack rating. With that said, if you want to put points into pierce, you have no choice but to put a point here.
Pierce (0-10)--Strictly for PvM. Once again, your gear is very very good and I don't think you will need to pierce anything as it will probably die on first hit anyway. Your high attack rate will compensate. Thus, I recommend zero here as well. If you absolutely must have pierce, I suggest wearing razortail just for PvM.
Dodge/Evade/Avoid (1-10)--This is a must for all amazons, it saves you from taking any damage at all. I find that one point is often enough with +skill items, however, I personally like to pump it to 10 at least. After that, however, the returns diminish and it's not really worth putting more into them unless you've put points into everything else you want. At that point, this would be the place to dump your remaining skill points.
Slow Missile (0-1)--This is useful when in duel against other ranged opponents. However, as a bowzon, you should be well away from them and you should be spamming arrows at such as speed that they should die first at any rate. I recommend 0 with the items you have, but 1 points can be useful now and then too.
The rest is 1 into prerequisites.
STATS
There's two ways to go about this one I guess. You won't be holding a shield I suppose so block isn't a concern. You must thus find a balance between damage and life. Here's what I would recommend.
PvM-oriented ("Glass Cannon" Approach):
Strength: enough for gear
Dexterity: Rest.
Vitality: Base (You should not be getting hit in PvM)
Energy: Base
PvP-oriented:
Strength: enough for gear (try to calculate strength charms and put as little as possible, make sure that if you can't hold an item upon picking up your body that there is space in your inventory for the item. Otherwise, it's not too good)
Dexterity: Enough for gear (you might want to reach a certain amount of damage too, but at 7fpa and your gear, damage should not be a problem.
Vitality: Rest.
Energy: Base.
Of course, a mix of the two is good as well. You might opt for a shield as well for block while running around.
GEAR
All your gear seems to be optimal, if not very good. Fortitude is much better than enigma in my opinion, 300% ED is unbeatable for a bowzon. Faith, Highlords, verdungoes, gorerider are all pretty much standard.
With faith, you should not need too much IAS to reach 7fpa, so stick to the highlords for damage. Goreriders are a good bonus too.
Since you lack a bit in resistance, you might want to boost that up with charms or perhaps change your helm. Kira's Guardian offers a massive resistance boost and some FHR. Either way, you shouldn't get hit too often by elemental casters.
Rings, for PvM, I would go with a ravenfrost with a dual leech ring (although with vampire gaze, this might not be necessary at all). For PvP, go with dual ravenfrosts.
IAS, you might want to use crafted gloves with IAS, skills, leech, resist and all the goodies. You need to reach 7fpa (i forget what %ias that is).
Anyhow, this is all I have to say pretty much.
Good luck
-masterazn