If there is a trick to writing a process paper, it is to take the time to look at the steps you have listed as if you had never seen them before. Imagine you know nothing of the process you plan to describe. Read over your steps critically to see whether you have omitted anything. Sometimes the most ordinary processes are the most difficult to describe, as any writer of the "how to tie a shoelace" exercise knows! If you can, try following your own steps to the letter to see if they do, in fact, bring about the desired result. No cheating-if you must do something not already on your list of steps, add it.