Hey guys
Need some help on the warrior class and thought i would ask the community.
1. When should i activate my juggernaut buff? I've experimented with the buff and it seems that it's additional health buff can be used quite well a a healing skill. It replenishes around 40% of health when i activate it during battle. Whereas when i activate it before going into battle, i feel like i've just wasted 40% of healing skill.

2. I don;t feel quite right with my skill build. I don't quite like the damage output from my skills, its way to low. Can someone please tell me what upgrades I should up for my skills? Better yet, correct me if i have chosen the wrong four skills. My current skill build for level 8 is this (Numbering behind the skill represents the upgrades from top to bottom):
Skyward Smash (1,2) , Windmill , Juggernaut (1) , Horn of renew

That's all. Would really appreciate any help thanks!