Watercolor art is subtle, colorful, alluring, and soft. People enjoy it for these reasons. It can be quite literal with interpretation and rendering or it can be edgy and even abstract. It is all up to the artist but the medium gives itself away right from the start. As long as it gets wet, the watercolor paint comes to life and a little goes a long way.
Now the brush needs to be used and, ideally, it will be one of good quality and not one of those hard, bushy, plastic ones. The brushes you use for watercolor need to be soft. With the exception of some texture tools, everything you use on that paper should be. This is exactly why you would do best to use sable watercolor brushes.
The smoother strokes actually come out with more definition but the same soft edges. It is an interesting visual effect of the brush quality and the strokes by the artist. This is always the dance of art in the making. The finer brushes are what is needed for the sharpest rendering and even imitation of other media.
It can be fascinating to use watercolor in the various different ways possible. It may even surprise you to know just how much you can do with it. There are wet surface projects, dry surface, moist surface, several to many different bonds and weights of paper to learn about. Different paint brands and forms that are available, which you like the best.
Everything you want to go into your art should be sourced from the finest quality. Make sure you do that and always treat your art with love. What you paint is a part of you. Become the art while you are painting. Or, do whatever it is that makes you happy. Painting with watercolors is meant to be fun.