I get to the part of using RB + X (to connect with Aya) ... then i click X and nothing. I don't seem to be able to target the barrel.  
 
Any advice? 
 
Cheers

To connect hold RB and hit the corresponding party member, then release RB. It should say "connect" over the 2 connected party members with a list of skills over their (Aya's) name. In her case make sure the skill "Ravaging Raptor" is listed and hit it, she should then run in front of Capell and the game will enter a third person shooting mode where you can free aim using the control stick(s).  If Ravaging Raptor is not listed you can add it in the menus.
 
However, IIRC any damage you take while in this shooting mode will cancel it asap and you will return to normal combat so you have to make sure you have a spare time frame to use it in.

Thanks! I'll try it... :)

I believe there is no way to manipulate the camera other than what the right stick can control. It can be fairly annoying later on as well when battles are more intense, though the default "normal" difficulty is ridiculously easy so it shouldn't be a huge issue.

" I believe there is no way to manipulate the camera other than what the right stick can control. It can be fairly annoying later on as well when battles are more intense, though the default "normal" difficulty is ridiculously easy so it shouldn't be a huge issue. "