If there is a foundation, it is to practice more frequently and learn more from good light and shadow skills. If the company has a great god, it is better to dig up some practical experience (in terms of drawing skills and software commands). As for the video tutorial, it may not be very useful, and this kind of tutorial is available in Bilibili Youku or something
Do bosses have recommended product board drawing tutorials
Wow, good cow
Good!
This is very mainstream.
Practical
It's quite simple