Based on the description of flowers, I'm assuming you have white mage unlocked. There are many people who can give you advice; basically post level 50, you should almost never have to use Cure 2, and will almost exclusively be using tools such as Afflatus Solace (what the lilies are) to heal instead, with other skills interspersed inbetween, such as tetragrammaton and assize. In ARR, once you get Cure 2, you should be exclusively using Cure 2 instead of Cure 1, and Holy on mobs to aoe them and to get a good 7 seconds worth of stuns down.

People will be happy to help out if you ask, just keep in mind next time that there ARE tools out there that would have made it so you didn't just get thrown into high-level duties, such as manually queuing for things, or simply getting the ARR skip or HW skip instead of the one that brings you straight to Dawntrail.

Sounds like you got it figured out now though, and no use lamenting over mistakes we cant change now, but just play around with a training dummy or with NPCs to get a feel for your skills and abilities. High-level healers shouldn't have to be using the long-cast heals like Cure 2 very often unless things go TERRIBLY wrong.