Can you give us the name of your character so we can look into it a bit better? Would help us a bit.
Opener should be something like this:
-3 sec. Unleash Elements
-2 sec. Feral Spirit
-1 sec. Pre-Pot, Fire Elemental Totem & Spirit Walk
0 sec. Flame Shock & Project totem under boss
1 sec. Cooldowns (trinkets/EM/Racial) & 2 sec. Stormstrike
2 sec. Lava Lash
3 sec. Liquid Magma
4sec. Ascendance & Windstrike
Try to dump a lot of lava lashes because of FS resets early on. Other than that there is not a whole lot to do for an opener and you should just try to find the perfect time window for everything for yourself.
Without logs its hard to tell though where your main problems are.
Also: Wordup has a good
guide stickied at the top of the forum, another great read would be his
google doc, where he goes more into detail for each bossfight in terms of talents, glyphs etc. Maybe you can find some more tips and help there.