1. Don't stay in tree form while there is lock around
Banish is a silly thing I often get caught in unnecessarily
2. I can actually take out a shammy totem with my branches
When it isn't a super intense fight I now try to get rid of those silly totems for me and my partners benefit
3. I can change forms when hexed by a shammy
Yes, I know you are all shaking your head but now I know
4. Can't get feared if I keep my distance from locks and priests
Learning when to keep my distance is coming with more experience and the timing of that distance is everything. There is a balance which I must obtain of knowing when my partner is in trouble and hots are running out and when to stay out when he is safe
5. Mortal strikes from warriors have to be taken much more seriously because they reduce my healing by such a crazy amount
I've often underestimated the mortal strike and just how much it affects my heals especially from a well geared warrior that can do intense damage. I'm definately being more aware when they are on me to root them when possible and keep myself topped off.
6. Importance of LOS
I still struggle with line of sight. Again the balance of popping a hot and hiding. I tend to want to be close to my partner to help him but I know I'm not helping if I'm dead or have no mana. Mana burns are my worst nightmare and I am working hard to avoid them. Somtimes I get caught up in healing and CCing an don't even realize until its too late. But, I am trying to be more conscious of them.
7. Last Woman Standing
When my partner has died the fight is not over, especially if its now only 1v1. I have my swarm, moonfire and if careful I can still win it. I've made mistakes in this case but changing out of tree to root which I have to be more cautious about depending on how much damage the enemy is doing but playing it wisely, it can be done.
Yes there are many more but I'll leave you with these to roll your eyes with :)