Adding a spawn picture to a SENT?

How do I add a spawn picture to the entities menu for one of my SENTS?

You place it at materials\vgui\entities
ameofyouraddon.vmt

No lua involved.

Isn’t it materials\VGUI\entities
ameofyourentity.vmt

or does the capitals not matter?

Oh. That’s easy. Thanks guys. Real fast, is there a quick way that I can take a melon prop I made using lua and cause it to explode, like into it’s gibs?