so i'm a bit bored and have a helpful urge at the moment so i'll throw out some tips. use them, dispute them, ignore them or improve them. also you can add tips for other classes if you'd like.
tip 1: sing! any bard that doesn't sing makes all bards look lazy. even if you're only singing for the healer you still sing.
tip 2: learn to manage your songs and mp. any bard that plays foe's and just let's it go until you run out of mp is only a decent bard(decent because you're actually singing. such a beautiful rare creature you are. like a duty ninja that uses goad <3). for big pulls with lowered geared allies sure it's ok to let foe's run out, if there's another bard that actually sings in the party or if it's during a boss that has no phases and is a straight "tank and spank". if it's not those three manage your mp pool. getting foe's for one pull is nice but getting it for every pull or almost every pull is nicer.
tip 3: use repelling shot!
tip 4: use repelling shot and blunt arrow together when nothing needs to be silenced! also mix them in between your global cooldown skills.
tip 5: practice your aoe spamming. yes wide volley is nice and yes it -can- give you free aoe moves but unless you're having a very lucky day learn to shift back and forth between quick nock and wide volley. they have the same potency but the trade offs are quick nock is a cone shape and 20 tp cheaper which adds up. wide volley is a spread aoe, it's not as large of an area as rain of death but rain of death is only useful when it's free(nobody needs that accuracy bonus silly se). so if your tank can gather up the mob use quick nock, if the mob is a bit scattered then you wide volley spam.
tip 6: 3 or more you single down and focus after you have applied your dots to all 3. 4 or more and you use aoe's unless they have silly amounts of hp and your partner/s are really lacking in gear or you get a monk(mostly kidding about the monk part)
tip 7: while this isn't 100% concrete and mostly a preference tip i found i got more mileage from stacking my buffs together after using them all at once on boss fights. i use blood for blood + internal release + flaming arrow. hawk's eye + barrage. raging strikes + mega dex potion. if the fight last long enough you'll be mixing them together more and more.
last tip for now 8: practice your invigorate timing. don't use it at 600. sure it gives you 400 tp so it seems like a perfect fit but you can do better and last longer. if you practice matching it with 650-670(depending on how you've used skills) right as you're about to get a tp regen tick you can get that free tick after invig. so you're down to about 650, you pop invig and use skills as usual, you get a tick right after invig and skill usage so you're right back to 1000 after using a skill or two. it requires some timing but i think it's worth it.
if this seemed harsh it wasn't meant to be, in my mind it's supposed to make you giggle but then again i'm sleepy and bored which can make for weird times.