Pixie Charm As mentioned, we are assuming you group is uncoordinated. With this in mind, you need to do as much as possible to contribute. During dull moments, you should seize a camp to help the team.
Unfurling Spray The range extension is really small, if Pixie Dust is casted on yourself you can close the distance by running to the target that requires healing. (If it is your 1st time as a healer, pick this up)
Hyper Shift Knowing the opportune moments to cast your trait eliminates its necessity to be available as soon as possible. Also a team fight does not last long enough for you to cast this ability multiple times.
Dream Shot Almost all of your targets will dodge this ability with ease throughout your game. I do not suggest investing a point into this option its simply worthless. Unless your team drastically lacks damage. Manic Pixie Although the healing is very little, every little bit counts. (I recommend using this on your tank or allies that could get focused.) Picking this, requires you to pay closely observe the health of allies.
Arcane Barrage Allows you to poke your targets from a safe distance and disrupt objectives on certain maps. The extra range can also be used to scout ennemy camps & strange bushes that seem suspicious.
Peekaboo! This talent is a must if an ennemy Nova is present. It can also provide some extra vision for your team. However, it only lasts a meager 6 seconds and relies on you to use up your Phase Shift.
Unstable Anomaly The cooldown for Polymorph is long and the damage is very low. A general battle against the ennemy team will not be long enough to cast this ability multiple times. Avoid picking this up.
Cleanse A practical ability that can potentially rescue an ally that overextends or gets possibly stunned and slowed. Even if the ennemy doesn't have any stuns/slows, it is good to get accustomed to this ability.
Phase Shield Provides extra survivability, however, can be wasted on targets who don't take advantage of it. This talent requires some organization and enforces a play-style that fits a certain hero composition.
Mistified Unfortunately, to get the full potentials of this talent would result in depleting your mana at a very fast rate. Similar to the previous talent, this demands a great deal of organization & communication.
Blink Heal: During a team fight, the ennemy wants to eliminate a target quickly. This instant healing ability comes in handy. (If the situation is ideal, cast this ability to instantly heal your minions in a lane.)
Emerald Wind Requires a great deal of organization and communication of when to cast it and to fully utilize the push back. Also improves your trait, but requires you and your team to move closely together.
Ice Block Can save you from a troublesome situation. (You can cast Blink Heal immediately to blink to an ally or even minions to save yourself. This takes practice but is rewarding if you are heavily focused.
Shield Dust It is very strenuous to predict which one of your allies will be receiving a heavy amount of ability damage in such a short window. This is sometimes selected to counter heroes, for ex: Chromie.
Pixie Boost The move speed decays very fast and you might also use it on targets that do not utilize it. I don't recommend picking this talent, there are no possible scenarios, where this is viable or even useful.
Sticky Flare Although the movement speed slow sounds awesome. It lasts for only 2 seconds and it is already quite difficult to land a Arcane Flare successfully. Avoid investing a talent point here at all cost.
Hardened Focus The reduction in cooldowns can be very useful in a team.
Critterize Relies on your team to all focus on one target simultaneously.
Greater Polymorph Although, the extra duration is much appreciated, you should invest in healing instead.
Bouncy Dust This talent doesn't allow you to control on whom it bounces on and ends up being completely random. Even coordinating with your team to separate so it bounces is not worth it.
Storm Shield An instant ability that has a very large radius and is great against unexpected amounts of burst from the ennemy. It only last a few seconds, so use it wisely.
Double Wyrmhole Further improves your ultimate and allows for even more mobility.
Revitalizing Mist Improving Soothing Mist at this point, is not worth it.
Continuous Winds This cant be picked, because a different talent was picked at Level 10.

Dream Shot Coordinating with your team's stun assures that you can at least get a 2 seconds reduction.
Pixie Charm This forces you to leave a lane leaving your teammates behind and do camps. (Ask your teammates if they can do without your assistance for a while)
Unfurling Spray You and your team are already sticking close to each other already, don't invest into this.
Hyper Shift Team fights don't last long enough for you to cast Phase Shift twice. There should be no reason for you to go back to base or assist so often.

Most players don't realize that you can activate your Ice block a second time so it ends instantly. This is done because most enemies expect you to stay in the ice for its full duration. The element of surprise is a big asset here. Before canceling your Ice Block figure out if your target can stun you, if they are able stun you use immediately Blink Heal to get to a nearby minion or hero. If your targets are not able to stun you, try casting Phase Shift to aid an ally that needs you immediate attention. Its also worth noting that you can plan this whole trick around the next cycle of your Soothing Mist, so you come out of your Ice Block with a bit of health point from it.

Even if you can get a very short distance from "Backtrack" the difference can be between a kill and a escapee.

The term scouting is often associated with Brightwing because she can scout a bush with ease and especially with the extra added possibility of Arcane Barrage

term is often brought up with her because she can assure the safety of a bush from a very safe distance.

As previously stated, the trick "bribe soaking" is for very experienced players. At level 1, grab the talent Bribe and ask a (teammate that is preferably in voice chat and a tank hero) to come with you to either bottom or top lane, the lane is your choice. As your minions arrive and confront the ennemy minion, figure out where the majority of ennemy heroes are. If you are in a lane with more than 1 hero go where there are less heroes. Next your ally will be go ahead and intentionally take damage from the tower from the further range possible. While you as Brightwing will be nearby your ally passively healing him with Soothing Mist. If you have the chance to be in a nearby bush or place yourself to see incoming ennemies do so. Pay attention to missing heroes in lanes and any message by your teammates.