Texture used as env_sprite?

I just want to use this texture I made of a flower a few times around my map. I may eventually move to my own set of detail props, but since I find that very complicated right now I was wondering what I might need to add to the vmt of a texture to make it work properly as an env_sprite.

It works fine, but it sorta flashes kinda like overlays do in hammer, but in game.

Seba-079 said:

IIRC you have to use unlitgeneric for it to stop flashing. Don't kill me if it doesn't work though.

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That was it. Thanks for the suggestion.