This is how I blunt cut my own hair. It is the fast and easy way to cut your hair yourself. I used to cut my hair wet and just clip a a little bit at a time until it looked even. But that method gets harder to do the longer your hair gets. My hair has alot of texture and is not straight when wet. So, I started cutting on DRY, FLAT IRONED hair instead. If your hair isn't naturally straight, you will need to flat iron it before cutting to ensure it comes out even. You can do this if you have fine, thin, thick or coarse hair. It doesn't matter as long as your hair is long enough to put in a low ponytail.
In this video I cut about 3" of hair but I really need to cut 6" total. I'll do it later.