@oristarA,
Ori, you will have your own accent regardless of what accent you try to mimic. People will know that you are a not a local no matter where you go, don't worry about it. I can pick out a kid who grew up in Alberta's rural country while someone from Ontario or Seattle couldn't hear the difference. Someone from Newfoundland could find 20 variations of the same sentence within a 100 mile range, and to me they might all sound the same. We are all from somewhere else, there is no proper pronunciation, really.
I have friends from Hungary that cant pronounce the W or Wh sounds, water = vater, and others from Italy or India that can't pronounce the TH sound, that = dat . My friends dad is from Denmark, he calls the Vikings, Wikings. Most of the Chinese born speakers have trouble with L's and R's. My Mother's from N. Ireland, she pronounces words like
Cat - Cyat, I would say Caht.
Make - Meyke, mayke
My Dad calls Pizza, peetzer, he's english.
The difference is subtle. regional.. and none of them are wrong.