So I seriously had to think about what to post. I have a couple of thousand phone photos (when I'm seriously taking photos I use a camera) and there are a LOT of memories and choices.
In the end I decided on one for 
Look right in front of the bush, just left of the hole. That's an average size sidewinder in hunting posture.
That's a crop of the same photo (I followed the rules. 1 photo) to show a better look at the snake.
See how it's folded up with it's tail (and rattles) underneath itself? That's how they hunt. Notice it is in a bit of a hole. They actually vibrate their bodies and 'shake' into the sand so the prey can't see them. I've seen them way deeper buried then that.
It's about an average sized sidewinder. 2 feet (.67 m) is full grown for males and first year females. Females that have had a litter or two will actually grow to 3 feet (1m) and get a lot thicker.
This photo was taken with an I6 plus. I didn't see a single sidewinder this summer so did not get a picture with my newer SE and improved camera.
RE: Weekend-engagement topic week 25: Your phone photo