Portrait drawing digital red and black

Hello friends of steemit, it is my honor to make my first post and a slight introduction, as my name says otaku art I love to draw manga and anime style women, I am an apprentice of drawing so any tutorial or advice you can give me to improve is extremely grateful and important to me, I hope you like the process.

This is the reference I used to make this work.

https://www.pinterest.com/pin/425097652335181261/