The first is patience. Designers are not created overnight. It takes at least a year to hone. You won't get paid in this process, it will be very hard. Often many people change careers after half a year.

Secondly, we should know how to measure the house, cad and budget, which are the most basic things for designers.

Third, to have the ability to conceive three-dimensional space, the reasonable size of furniture is very important.

Fourth, we should have design ability, such as background wall modeling, ceiling modeling, decorative cabinets, wine cabinets, shoe cabinets facade modeling. How about these? You can look for similar pictures on the internet first and draw a gourd ladle. After a long period of imitation, you can slowly add your own ideas and become your own design.