You can now add Sketchfab 3D previews of your workshop model to your workshop item's page.
Here's an example:
Sketchfab:
https://sketchfab.com/models/7356fd0bc0a5464fa36f8319da0d1a09
Workshop page:
https://steamcommunity.com/sharedfiles/filedetails/?id=451299843
Here's the official Steam Announcement:
http://steamcommunity.com/games/SteamWorkshop/announcements/detail/950630846486279664
I'll quickly run you through the steps to get it working for Blade Symphony:
- Get a Sketchfab account at https://sketchfab.com/
- Click upload and browse to your blade symphony workshop_temp folder and search for your workshop item's .VPK file (you can use the id in your workshop page url to find it in windows explorer search steam_urlID).
- Once uploaded tweak your 3D settings and grab the page URL of your model from your browser (not the link given when uploaded).
- Go to your workshop item's page and click edit/add images on the right you can add your sketchfab url, save and you should be done.