My deepest sympathies.
But when considerring your own mortality. They'll carve that stone any which way you like, or you can have anything at all blasted onto that stone if you want a more traditional shape. It'll look like a black and white picture. We had a nice wide scene of Cape Hatteras put on my Grandparents stone above their names. It's identical to a picture they'd taken 50-yrs previous.
A local monument company makes Harley shaped stones. I've seen a few nicely detailed ones bearing testament to local riders in cemetaries.
You can have anything you want here, and in the ever after.