Newbie Illustrator Needs Your Critiques!

andersonm

Hi people, I've been absent for a long while! I was studying a lot, trying to improve my drawing and painting skills.
I've been even picking some freelance work as an illustrator since 2016!
Anyway, until last year I could see my growth as an artist, I'm certainly not some great draftsman/painter by any means, by I could see my own improvement. However this year I'm feeling stuck. I can't move forward, I'm feeling lost and feel that every single piece I do sucks. This year I only got very few jobs and I'm feeling pretty down right now.
So I'm posting some of my paintings in here and in other places to get some critiques, see what my shortcomings really are, where I'm failing harder, what should I study more and, hopefully, get some tips to help me get better. These are paintings I'm actually kinda proud of, but please be honest, if you think they suck please tell me but also elaborate a bit on why do you think they suck.
To see more of my work and maybe get a better perspective of the whole, you can visit my portfolio at http://www.andersonmaiaart.com/ .

Thanks in advance people and sorry for my lacking english!