There are many ways to draw and just as many opinions about what is good and what is not. The tension often manifests between those who value realism and those who create abstractly. The truth is that neither are better than the other. Their intended purposes and messages are very different and they can't be judged by comparison. The amazing thing about art is that her is no one way to be an artist. It's the process and not the product that benefits that artist the most. Even famous artists make a lot of bad art in order to get a few good pieces.
Most children begin life as artists. They draw and color with a freedom envied by adults. Young children don't yet fear judgement their work. There are some common stages that children move through as they learn to draw. Artists often circle back to one of these stages as a main focus of their artistic style.