I first created layers like how its done here
How to cut your own hair - YouTube

Then I went ahead and parted my hair in the middle, Tied in 2 low ponytail, tilted my head to the front, pulled the hair ties to the bottom until how much length I wanted to be cut. below is the video for that method
Self-trimming my hair (Feye's method, U-cut) - YouTube

usually one would do a length cut and add some layers. But for my purposes, I have under layer of 2c and dint want a lot of layering there. Plus I had a V cut before so I figured doing the layers 1st then taking out the length would work much better and it did.
3a with some 2a-2c, Medium/Low Porosity
Co-wash:deva no-poo/Vo5 kiwi
Leave-in:Shea Moisture/GVP conditioning Balm/AOHSR

Since long hair- I finger twist in big chunks, which helps till 5th day hair
Gel:LA sports
Plop: Old T-shirt for 15 minutes ,diffuse