How to send photos of dead animals to Cletus

After I completed the Strangers & Freaks mission "Fair Game" with Cletus, he said I could kill animals, send a photo of them to him and he would pay me.
I've run over a few Coyotes and deer since then and taken photos with my snapmatic, but all it does is add the photo to my online gallery.
How do I send the photo to Cletus for my payday?


To activate the hunting minigame, you need to travel to the icon on the map, that looks vaguely like an elk head, and enter the trailer at this location. Trevor then gets the animal call and a sniper rifle with unlimited ammo.

A crude image of the hunting icon:

enter image description here