[@Hipster]

Don't worry about being new. ^^ I have an infinite amount of patience for people new to this sort of thing. I was there too, once, not long ago. 

Just one more thing, though. Your Mana was right to begin with. 18 seems reasonable, as it is 10 + Magic + 1d6. Spellpower in Dragon Age is basically how powerful your spells are. Translated into rules terms, when someone tries to resist a spell of yours, they have to make a check (the specific ability used depends on the spell. It'll say in the spell description) and they have to roll equal to or greater than your Spellpower. You can find the actual field for this right under your Defense. 

So yeah, just that one thing and you're good!