Sorry for the slightly unhelpful comment, you caught me in a reverie for my GvG days XD
As pennance I've have a critical look at your build:
Your choice of celestial amulet seems odd. That condition damage and critical damage are suboptimal. You're rather low on HP so I've added a Soldier's Amulet and combined it with a cleric's jewel.
You probably don't need two healing sigils on a weapon set - consider a hydromancy rune to freeze enemies instead.
I haven't gotten into the Guardian class too much, but wouldn't more points in the virtues tree make more sense than Valor? Yes, toughness is good, but isn't your intention to have longer lasting protection/regeneration? I'm no expert, but I've suggested some Valor traits as posibilities.
http://gw2skills.net/editor/en/?fUE...QQsHY0H1RXFSIA;TwAA1Cmo6y0loLbXuukdt2Ysxug5GA