Deeply understand the principle of mechanical drawing
Mechanical drawing is a wonderful knowledge, and every line and every view hides the secrets of parts. If you want to master mechanical drawing, you need to understand its principle deeply. I recommend you to read the book Descriptive Geometry and Mechanical Drawing, which will take you into the fantasy world of painting and tell you how to skillfully draw the outline of parts with lines.
Familiar with CAD software operation
Now that you have mastered the basic principles of cartography, what you need to do next is to apply these theories to practice. I suggest you start with a CAD tutorial book and learn how to draw various lines, set layers and use the capture function. Remember, practice makes perfect, and it is very important to cultivate good painting habits.
go into action
Follow my guidance, master the principle of mechanical drawing and the operation of CAD software step by step, and you can also become a master of drawing! Remember to practice more and cultivate good painting habits. The future master of painting is you!