Thank you for the nice comments!
Today was a slow day and i didn't produce much, but i wanted to share something that made me really happy, i feel that i have overcome a obstacle that has been a struggle for such a long time.
I was feeling demotivated while trying to structure the heads and decided to see how it would change the way i usually draw.
It may look silly, but today was the first time that i ever felt real joy while painting. For such a long time i hated doing it, and because of that, i focused too much on doing just line art, because of that my pieces would never be trully finished, and i would not give everything i have.
The painting is far from being good and the page is a mess because i wasn't planning on posting it or anything, but i want to keep this as a register to myself.
I hope that this is a starting point, and from now on i can trully give my 100%.

Thank you Lukie!
I started to dip my toes on rendering the face.
I'm trying to limit the number of values i'm using so i don't feel overhelmed, using only hard edges brushes, because i heard i will learn more this way...
I've introduced mid tones in this one:
I'm gonna have more caution to keep things less messy next time.
Let's keep practicing!

I've made some more drawings from reference... painting is difficult, but i will get there!
I've tried to construct some from imagination too.
For last, i decided to try to draw my D&D character, i applied some suggestions that i've received in discord, and gonna try to paint it next! I'm really happy with the result .
Wish me luck!
Insane. These are some seriously good drawings! I should probably start copying you and do some personal work too. The studies are looking good. Your linework on that second face is really good, I think just pay more attention to the reference when shading cause a few of those shadows don't exist in the photo. Keep it up!! (I'll definitely start forcing myself to use a hard brush from now on)
@Lukiesartventure Thank you for the feedback! I got carried away and made some crazy shadows hahaha. I'm going to be more careful next time.
I started working on my friends characters too. The first one is Wim, the Tortle (turtle person) druid!
Thank you @Lukiesartventure!
Yeah, his nose ended up kinda strange, but i've decided to keep this way, but i will keep this in mind for the next ones haha.
I've taken some time out to rest, but now i'm back! I've decided to practice some more heads!