My feedback? Google "3d artist jobs" and go get a job. Those other guys you mention, started with a job.

Instead of "i use maya. I use zbrush"..... ask yourself "what do i create?

Those guys you mention are obviously game asset devs. Guns. Suits. Robots. Concept warriors. Etc... any jobs for game assets like that?

Starting jobs may be "environment creation"..... so, can you make a scene for someone's game? Work with other to create concept then game ready environment. So, "your preferred software" adapted to blender/maya/max etc... then optimized in unity....

Like this guy for instance

https://dribbble.com/MikaelGustafsson

After you are working somewhere, the foot in the door starts....

Or, if you are REALLY GOOD, enter the zbrush contest. Or maya contest, etc... etc....

Win those and people will ask you to work for them....