Jaime, you are getting a handle on it. You won't forget what negative you are printing if you take good notes! I tell my students all the time to do this. When you sell your first carbon print and have to make another one of the same image you will understand why I say this. This is one of the reasons I prefer to use my own lay down tissue. Looking at my notes and formulas I can get pretty darn close to my original print if one sells. Unless "the cycles of the Moon" happen. I'll let you figure this one out. Comes with more and more experience as a carbon printer. Keep it up it is a very relaxing process.