When doing any piece of artwork, I always post progress photos as proof of work.

On the left is a large thing by Jackson Pollock, where he threw a lot of paint onto a big canvas on the floor with no purpose other than putting a bunch of one thing onto another, then it wound up being more famous than a turd of a newly discovered dinosaur species.

On the right is a picture of a dog, which took many hours and looks like something; namely, a dog. Here are the progress photos of the picture as I worked on it. It’s not intrinsically better or even famous, but the person who got the drawing loved it.