I never know how to give advice to a writer because there's so much you could say, and it's hard to translate your own experience. But of course, I always try. The main thing that I usually end up saying is to read a lot. To read a great deal and to learn from that.
A true critic ought to dwell upon excellencies rather than imperfections, to discover the concealed beauties of a writer, and communicate to the world such things as are worth their observation.