
1) Preferably carry a mp ring ( ishinis should do )...in case you do not possess a mp ring, you should have a mp capacity of atleast 10k to be on a safer side!!
2) When you go with the player, if expects you to mob, be at a safe distance from the boss and try to conserve mp...try to conserve as much mp as possible...dont put on bor and karna when its not needed....you can mob without bor ...trust me...its a pain in the @ss but yes, you can!!
3) Chances are that you cannot tank bosses usually...so, preferably avoid running into a huge mob of bosses!!
4) Now, the player has got the mob....he is putting bulb on them, dont heal him while he is doing this!! Ask him to take care of himself!! Usually, the player will.....while bulbing, the player is moving...so, there are very high chances you will run into the mob as well!! Avoid this!!
5) SPam healing if u wish to in the beginning and once you assess the capability of the player and the damage that he usually suffers, heal him accordingly!!
6) During heal, if a creep is hitting you, dont panic!! Its usually HKs and mages who mob bosses....expect the mage to sleep and hk to bonezpa!! dont start running...use your hp pots!! if u wish to put on bor, do it very fast!! by that time, the hk would have pulled the creep....if its a ranger...expect the player to do something....you dont start running witthout informing the player....
7) Chances are that the player you are healing is higher than you!! So, it is sometimes better if you die saving him than he dying and you surviving!!


green dot indicates where you have to stand!!
example:

this is the other arrangement!!

example :

9) When you get a unique or a grace, dont run away!! Chances are you will find more rewards if u dont run away!!
BEST HEALER FOR ME : GREENDRAGON!!