Sammily,
It's true ah. I believe so. Of course, just gently 幫佢"練"吓 for a very short while. My grandmother helped her children to "練"鼻樑, my mother and her siblings all have pretty noses. However, my mother is a very lazy mother that she did not do the same to me, so my nose is not as pretty as hers.
Why don't you believe in 老人家?