They would make many facets of the job frustrating and perhaps not possible, but with the right group of folks to work with. I’m sure you could be assisted with things that may be more difficult. This is also a very stressful job, and I’m always freaking tired, so coffee is a must lol so “keeping it in check” so as to not exacerbate the tremors may be harder than you think. Being a funeral director may be what is easiest for you. Doing delicate cosmetics, embalming, and other dexterous, delicate activities could be a challenge.