Can I teach myself to cut my hair? Can you give yourself a nice haircut?

My hairstyle is round, and every time I go to the barber's, I argue with the barber that it is 3 mm. I bought an electric hair clipper at home many years ago. I bought it according to the brand and model of the barber shop. I've been cutting my child's hair ever since. Except for the occasional 3mm haircut, I always cut my hair to 0.8mm, which is close to baldness. Anyway, children don't have to care too much. Moreover, the little boy is very imposing, and it is cute to leave a little bald head for the child for a while. I also cut my hair from time to time. Generally, wash your hair first, then put on a 3mm mold clip and push it back and forth neatly like mowing grass. In fact, this step above is not difficult. The difficulty of cutting your own hair lies in trimming, especially when trimming the back of your neck. When trimming, I usually take off the clip, adjust the clipper to 0.8mm, and gently lift the clipper perpendicular to my head in front of the mirror. The specific steps and techniques can imitate the techniques of barbers in street barbershops. Every time I go to the street, I go to get a haircut, because no matter how they wash, they can't clean those broken heads. I have to wash myself twice every time I go home. It takes about an hour to get a haircut in the street like this, plus washing at home before and after. Now cut your own hair at home, and it will be OK in 20 minutes at most. Save time and effort, don't use unlicensed garbage shampoo from street shops. Because I am so autistic that I don't even go to the barber shop, so I have developed a set of hairdressing skills myself. None of the above hair-cutting artifacts have been used. I used a blade, the kind your father used to shave ... an artifact to repair all kinds of long, short and broken hair. The effect is natural, and it is no different from the one cut outside. It is very easy to use. You won't cut one hole at a time, and it's easy to remedy if it's broken.