(eng trans summary) 1. practice drawing lines such that it shows the 3d form accurately. one simple way to practice this is to take simple objects and practice life drawing from them from different angles. 2. muscle memory exercise. (I think he is referring to gesture drawing here or something similar). repetition is better than spending a lot of time trying to perfect an artwork when you're practicing. try drawing the same picture (whatever you want to practice on) 5 mins, and then again for 10 mins side by side. just draw more to help memorize 3. doing studies of other artists' work. eg how they use color and thus learning from them 4. volume practing. practice about 1-2 hrs a day, and spend the rest of the time working on your own projects. one suggestion is get a pack of A4 paper and work through 100pcs a month. 5. observe and collect information. build up your mental library by drawing from pictures of the thing you want to draw, this will help with drawing from memory/imagination.
Yeah, but not everyone is able to speak English... And also, adding subtitles is a LOT of work, I've experienced it before and it's really repetitive and exhausting.
basically; *practice and use reference* - take note that REFERENCE IS NOT COPYING. You are REFERING to an image, If you were copying, it would look 100% the same as the image