Ahh. I see where your making a mistake. First of all lets deal with the ice blitz.
You should stand like 4-5 spaces away from the victim, then blitz two times.
Secondly, you should never use the quick-smash spec if your opponent has more than half of his health. If your ice blitz hit fair damage, it should take away about 1/4 of his whole health or less. So this is how you should do it:
1. Pot and do prayers, standing 4-5 spaces away from him..blah blah
2. Ice blitz him two times, then immediately attack him with the maul
3. Hit the opponent Regularly until his health is less than half. (this sounds annoying since you have to wait a few seconds since g maul is slow, but its way better than unsuccessfully hitting.)
I wish I had a vid to show you, but it shouldn't be very hard to follow these steps.