It's not so much beginning modeling attempts that are at issue here, it's folks who have been abusing the system by uploading a lot of garbage and then using external programs to generate tons of hits on files so they can make extra money from the revenue sharing.
A shirt for V3 or V4 doesn't have to have all the bells and whistles to be considered quality work, indeed if it just fits right I consider that quality enough for freebie purposes.
But were talking about folks here who upload stuff that took them 5 or 10 minutes to generate and spam the content database with it, then use all sorts of tricks to generate extra hits for extra cash.
So no worries, I'm sure your modelling skills are just fine as is and I'm sure that like me your improving with each and every model you complete. Lord knows my stuff isn't anything to write home about just yet either.. lol..