How one should start

I’m not sure how to start this story. Maybe it should start with a hooded silhouette and the shadow of exhaled smoke moving across a brick wall. Or the feel of the saddle on a thirty year old motorcycle. Or a white and pointed curve of leather over a foot with a round worm-scar, and the leather swinging and placing over dirty spots of sheep’s blood and leaking trash. Or the scratching jump of the line on a hospital computer monitor. I’m not sure where, but I think it should start.