Trigger warning, explicit harm descriptions

I normally cut on the inside of my upper arm, and sometimes burn my wrist. The burns are visible, but that's okay because it's a typical place to burn accidentally, eg oven, pan etc.
I don't cut deep, and the cuts normally go within a week or so. Which was fine when I was doing it once a month or so because, alternating with my tummy, it wasn't noticeable.
I'm harming more at the moment, maybe twice a week or more. I'm worried that my arm will be more obvious. I can't think where else to do it, cos my h sees me every day at least in bra and knickers, so thigh tummy etc wont work.
Where do other people do it? Do you want your cuts to be visible, or is it important to hide them? If you do them so they're visible, eg wrist, does it help when people see them?
Just curious I guess, and wondering about how we are all so different....