Man, honestly when I first started in this thread back in like 2014/2015 I was so hesitant to post, I felt like me work was garbage compared to the work posted here. I just kept at it and starting only comparing my work to my previous work instead of everyone else. It helped me a ton and I feel like I've improved leaps and bounds in the last 5 years, but still need so much more work! Now I just need to improve my landscape work to get on your level!
It took me a long time to get to that point, but that's what it's really all about, being better than the last time. When we get complacent and stop "working" to get better, that's when we fail ourselves. Similar to TRhoads, my "field of expertise" def isn't portrait work!! lolol. I spent nearly two decades doing motorsports before remotely considering portrait work. I have good sessions, some great sessions, and from time to time, some not so great sessions, lol. But I'm comfortable enough in my skillset to post my work, and tough enough to handle good constructive critique.