yeah if you see my profile i have a little star on all my item previews then i have it on my avatar and header image.
So try to create something that will always let people know it is one of you files.
Then make sure you always provided the best image previews as possible, it looks like you have rushed them at the moment. then provide good description and strong keywords, this is important to get your models found when people are using the search function on the site.
Sorry forgot to say you models do look solid, you are not showing to there full potential.
I would invest time in creating you own brand as it will make you seem more professional and more trust worthy!
Had a look though you account, if i am honest it is you render they a not high enough quality they just dont show you work off enough.
you need to show the mesh so people can see the topology of your meshes. as i would not buy an item i could not see the mesh for, as if it is poor it may take ages to sort out.
Also you previews are not very consistent, you need to create a brand for you self so if any one sees one of your item they know its yours, you don’t have a header image or avatar on your account this make you seem less trust worthy.
Hope that helps
Welcome look forward to seeing your work!
3d ocean is just not a high volume site, it has only been around a few years, also Envato does not do a lot of advertising and promotions for it.
your best bet if you are only selling 3D is to have a non exclusive account, then you can put you models up on the other major 3D sites.
Can often be the browser you are using, maybe try using another browser!
Sales have always been quite low on this site it just is not big enough yet, it is a numbers game you just need to keep uploading files!
The file are selected at random by envato staff, just keep releasing top quality files and you will soon have one featured.