New to healing, looking for tips

Hello all, as the title says I am a new healer who is working specifically to get stoneskin on my paladin so I can further reduce healer stress. I am a conjurer and successfully did a sastasha run last night (small victory I know) I was just looking for some tips that the vets use when dungeon crawling. Currently I start the dungeon with protect, and wait until tanks health drops to about 80-75% to start casting cure, while I wait though, I toss an aero on the tanks target (not in cleric stance). I don't have very many abilities yet, but ANY help would be greatly appreciated!

Use Cleric Stance to do damage, it helps. Otherwise you're doing fine.

beyond the basics which you've mentioned, what else you should somewhat try to do is

-Keep your gear up to date, whilst it may be low stuff and you'll blow past it quickly, at least try to have gear relevant to your level; your cures will be meatier and probably let you heal a tank fully in 2-3 cures rather than 5-6
-this lets you dps more if your comfortable with it, knowing you can heal the tank back to full in a few casts rather than a string of many means you can cleric a bit more, which obviously will speed up runs and make your goal arrive sooner
-have a rough idea of what comes in the dungeons; obviously if you play a tank you should know somewhat what mobs are there, what they can do, and how much can be handled.

otherwise just general awareness and knowing what could happen or little tricks helps [like how mobs in totorak who use aoe poison will throw it out again if you ensuna the tank]
low level healing shouldn't require more than cure/medica/ensuna/cure2 at a push