The only (small) thing I see wrong with your kit is the shamagh. Tie it properly and tuck the long bit into your collar. I'm not giving you fashion advice or anything, it just causes less issues if everything is tidied away properly... Nothing worse than missing the perfect shot because you got your shemagh wrapped up in your bolt.
Rip the burlap on the rifle up. This will break up the outline and really help with concealment.
I would also ditch the kneepads. Never found a use for them while sniping. The only thing they do is slow you down.
Other than that, a ghillie hood, like it has been said already. Doesn't have to be anything super fancy, just something to help break up your outline. I would also look into some suspenders for the battle belt. Don't want that falling down mid game.