Of course the most common use would be for tree leaves and grass.
As you may infer I'm a total rookie with Sketchfab.
1st thing I noticed after I uploaded the model is that my single poly meshes' normals were not pointing in the intended direction. Then I had read somewhere here that it's needed to create another side to these type of meshes (giving it thickness). But then I just found this amazing model called Flying Island 001 from Ricardo Chamizo (CONSTRUCTIDECEPTICON) which seems not to use double sided tree leaves.
What are the settings I need in Sketchfab for this to work then?
Another issue that goes hand in hand is Transparency.
At 1st I tried what I thought was the obvious: mesh + diffuse map + alpha mask map (in the Transparency/Alpha Masking/100%)
But I still get the black background
Thanks for sharing guys