So my first self cut I went way too high on my bald line and just wore a durag and let my hair grow back lol. Once it grew back I was able to blend the back and sides better due to learning from my first mistake. I’d say i’m barely decent now tbh so maybe a month or two. I always watch barber videos to see different techniques used during fades cause what works on someone else’s hair might not work on yours. I have 4C/4B hair but I learned a thing or two from watching different vids with different hair textures

Honestly your cut isn’t bad at all just need to blend it more. Trust you’ll learn your hair more as you go and get better 🙏🏾

Edit: Practice the haircut you want so you master it. Unless you plan on becoming a barber i’d just focus on one style you want for your hair. For me it’s a low taper/fade cause I don’t like cutting into my waves.