Decoration carpentry actually needs a certain mathematical foundation, and it needs to calculate materials, areas and sub-areas. Some people are not sensitive to numerical operation, and such people are not suitable for learning carpentry. In the past, I was good at liberal arts and poor at math, so it was difficult to learn carpentry for decoration, and it was also a headache for calculation. I suggest you learn a craft that doesn't need calculation, such as tailoring, haircut and making steamed bread. These skills are well learned, and the salary is as good as carpentry.