Hi Prema,
Tough question, I think mostly I your facial features seem 'more thin' to me than those of other Indians I've known, beyond that its really can't pin it down. Attributing peoples appearances to thier cultural/regional/ethnic heritage is bound to be frustrating because of the tremendous variability within, say, even families.
For instance, my own heritage, such as I can tell, traces back to Wales. When I was in Wales I was keen on seeing if anyone there looked like me, but I didn't get any sense of familiarity with my own appearance.
Then again, I'm pretty bad at recognizing people's ethnicity - I can't see a difference between my Korean and Chinese friends. So you shouldn't place too much emphasis on my comments.
Don