Jag Beast has pointed out some mistakes in your work. It appears that some of your models have flipped normals. In your render they show up as flaws in the model, but in some render engines these faces will not be visible at all and will appear as holes. In the other example he provided you haven't taken the time to ensure proper placement of the assets resulting in overlap. The other example looks like improper uv unwrapping.
His point is that your bio says you know what you're doing at industry standard but this is not true and kind of obvious.
Bud, a guy like you shows up here once a week thinking they're going to save the farm by selling models cause some guy on youtube said they were able to quit their day job.
This market is HIGHLY competitive. Not only do you have to be good at modeling but you also have to have imagination, drive and passion for your work. You have to be willing to devote your life to it completely.
Ten thousand hours is no joke. If you can't find a real job, hunker down. The term "starving artist" is a thing for a reason. At this rate you may be able to earn enough to pay for your netflix in a year or so.
Saying all this for your benefit, not trying to be a jerk. I do wish you the best of luck.
