There is alot of steps for a heart stransplant.
Lets see first you have to clean your hand and put glaves on. Lay the body on a table for doing your work. But before you do that you find a heart for the human so the transplant won't be a waist.
Then you take the old heart out, slowley and carefully. and put in the new heart and then flick it easily to get it started and then stitch up the body and hopefully he is still alive