Rotations are for dps. Healer skills are all situational, you need have a look of "what's goin on" on the group and act accordly:

- If tank is low geared and lose massive hp from the start, you cannot ever think to go cleric.
- If group goes fine and hp not an issue, you can use Selene for the dps buffs (little but better than nothing).
- If keep group alive is challenging, Eos is a must.
- Some debuffs must be cleared asap, and some other can be ignored. You must learn also what mob debuffs are.

About your pet, selene can stay on sic full time, her buffs have cd = uptime so she just spam them, eos instead you may want obey to call group help at times you know are good. Obey on both when you solo around for your quests, just in case you want pull mob away (pet does it automatically as soon as the skill in range, and there are times you dont want it happen). An important thing to learn is pet positioning: you want your pet stay in key positions and don't move from there. Just keep account she dismisses if you go too far from her.

Fine-tuning your dps is 1% of your job. Yes it is a great help when party undergeared (and fails dps checks and blame you for their incompetence), but not your main issue.